A group of students collected distance versus time data for a model car




Which describes how the speed of the car is changing over time?




A The speed is increasing because the distance traveled during each time increment is increasing.




B The speed is increasing because the distance traveled during each time increment is decreasing.




C The speed is decreasing because the distance traveled during each time increment is increasing.




D The speed is decreasing because the distance traveled during each time increment is decreasing.




Pls help! No trolls

The top of the ladder is approximately 44.1 feet from the ground.

To find out how high the top of the ladder is from the ground, we need to use trigonometry, specifically the tangent function since we have the angle of elevation and the length of the adjacent side. Here are the steps to solve the problem:

Step 1: Label the diagram and identify the angle of elevation and the adjacent side.

Label the base of the ladder as the adjacent side (a), the height of the ladder as the opposite side (o), and the length of the ladder as the hypotenuse (h).Identify the angle of elevation as the angle between the adjacent side and the hypotenuse.

In this case, the angle of elevation is 74°.

Step 2: Write out the formula and substitute the given values.Tanθ = o/aTan74° = o/a Solve for o: o = a * tan74°

Step 3: Substitute the value of a and use a calculator to find o.

Substitute the value of a, which is 14 feet, and use a calculator to find o. o = 14 * tan74°o ≈ 44.1 feet (rounded to the nearest tenth)Therefore, the top of the ladder is approximately 44.1 feet from the ground.

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A reasonable correlation coefficient for these data would be -0.60, option a.

A reasonable correlation coefficient for these data would be -0.60.A correlation coefficient is a statistical measure that measures the degree to which two variables are related or linked.

The value of the correlation coefficient ranges from -1 to 1, with values closer to -1 or 1 indicating a stronger relationship between the variables and values closer to 0 indicating a weaker relationship.

The correlation coefficient value for the given data can be determined by analyzing the strength of the relationship between the two variables.

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To determine the distance between the blimp and the stadium, we can use trigonometry.

In this case, we have an angle of depression of 8° and an altitude of 420 meters. We want to find the horizontal distance (the distance between the blimp and the stadium).

Using trigonometric ratios, we can use the tangent function to find the horizontal distance. The tangent of the angle of depression is equal to the opposite side (altitude) divided by the adjacent side (horizontal distance).

Tangent(8°) = opposite/adjacent

tan(8°) = 420/adjacent

To solve for the adjacent side (horizontal distance), we rearrange the equation:

adjacent = opposite / tan(8°)

adjacent = 420 / tan(8°)

Using a calculator, we find that tan(8°) is approximately 0.1405.

adjacent ≈ 420 / 0.1405 ≈ 2986.54

Rounding to the nearest meter, the blimp is approximately 2987 meters from the stadium.

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the ∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles). Also, ∠VRI + ∠WRI = 180° (Linear pair angles). The two lines TU and VW intersect at the point R.

Here, R is the common point of the two lines, and V and W are on one side of the line RS, whereas T and U are on the other side of the line RS.

Let's analyse the given diagram and draw the conclusions.According to the given diagram:∠VRI + ∠WRI = 180°(Linear pair angles)

∠TRI and ∠URI ar

e supplementary angles because T, R, and U lie on the same line.∠VWI and ∠VRI are supplementary angles because V, R, and W lie on the same line.∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles)

Let's understand this with the help of a few examples.If two parallel lines are intersected by a third line, then the corresponding angles are congruent to one another.

For example, consider the two parallel lines, l and m, and a third line, n, intersecting them as shown below:In the above figure, the lines l and m are parallel, while the line n intersects them.

Corresponding angles are those angles formed when a third line intersects two parallel lines.

For example, ∠1 and ∠5, ∠2 and ∠6, and so on. As per the theorem, all the corresponding angles are equal.In the above figure, ∠1 = ∠5, ∠2 = ∠6, ∠3 = ∠7, and ∠4 = ∠8 because the lines l and m are parallel.

This is the reason why the corresponding angles theorem is also known as the same-side interior angles theorem.

Therefore, from the given diagram, we can conclude that the ∠VRI = ∠TRI and ∠VWI = ∠URI (vertically opposite angles). Also, ∠VRI + ∠WRI = 180° (Linear pair angles). The two lines TU and VW intersect at the point R.

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Here's a math problem using the given segments:

A and B are two line segments on a number line. Segment A is divided into three equal parts, and the length of the last two parts combined is 18 units. Segment B is not divided and has an unknown length. What is the length of segment B?

In the given problem, segment A is divided into three equal parts represented by the three "|" symbols. We are told that the length of the last two parts combined is 18 units. Let's assume the length of each part of segment A is x units.

Since the last two parts combined equal 18 units, we can set up the equation: 2x = 18. This equation represents the fact that the sum of the lengths of the second and third parts of segment A is 18 units.

To find the value of x, we divide both sides of the equation by 2: 2x/2 = 18/2. This simplifies to x = 9. Therefore, each part of segment A has a length of 9 units.

Now, segment B is represented by "|B ". It is not divided, so its length is simply x units, which is 9 units. Therefore, the length of segment B is 9 units.

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The function [tex]f(x) = 3(1/3)^x[/tex] represents an exponential decay function. It is described by the following statements:  The function [tex]f(x) = 3(1/3)^x[/tex] represents an exponential decay function.

In an exponential decay function, the base of the exponent is between 0 and 1, causing the function to decrease as x increases. In this case, the base is 1/3, which is less than 1, indicating decay. The coefficient 3 represents the initial value or starting point of the function.

As x increases, the function approaches zero, getting arbitrarily close to but never reaching it. Therefore, the function [tex]f(x) = 3(1/3)^x[/tex] is always positive but gradually decreases as x increases. It does not have a horizontal asymptote because it approaches but never reaches zero. It is important to note that the function is defined for all real numbers.

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The complete question is:

Which of the following statements describe the function f(x) = 3(1/3)^x? Check all that apply.

1. The function represents an exponential decay function.

2. The base of the exponent is between 0 and 1.

3. The coefficient 3 represents the initial value of the function.

4. As x increases, the function approaches zero but never reaches it.

5. The function does not have a horizontal asymptote.

6. The function is defined for all real numbers.

The statement "f is not defined for any x-values in the domain [9, 5]" is true. This means that there are no corresponding y-values or outputs for any x-values within this restricted domain. Therefore, The range of f on the domain [9, 5] is approximately equal to [5, 5].

The given question mentions that the domain of function f is restricted to [9, 5]. However, this interval is not valid because the lower bound (9) is greater than the upper bound (5), which contradicts the conventional ordering of intervals. The correct representation of the interval should be [5, 9].

Since the domain [9, 5] is not a valid interval, it means that there are no x-values within this range that can be plugged into function f. As a result, f is not defined for any x-values in the domain [9, 5]. This means that there are no corresponding y-values or outputs for any x-values within this restricted domain.

The range of f on the domain [9, 5] is approximately equal to [5, 5].

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The number of people who like a particular video online triples every day after the day the video is posted and 15 people like the video on the day it is posted.

We need to find an inequality which can be used to find the number of days, t, it takes for the number of people who have liked the video to reach more than 3000. The inequality which can be used to find the number of days, t, it takes for the number of people who have liked the video to reach more than 3000 is: 15 + 3t > 3000

The above inequality is correct because the number of people who like a particular video online triples every day after the day the video is posted. This means that on the 2nd day, 3 * 15 people like the video. On the third day, 3 * 3 * 15 people like the video, which is equal to 9 * 15 people.

Therefore, the total number of people who like the video on the 1st, 2nd and 3rd day is:

15 + 3 * 15 + 9 * 15 = 15 + 45 + 135 = 195

We can see that the number of people who like the video on the 1st day itself is only 15, which is very less. We need to get the number of people who have liked the video to reach more than 3000. Therefore, the above inequality is used.

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The percentile rank of a GRE score of 667, based on a population mean of 500 and a standard deviation of 90, is approximately 96.6%.


To calculate the percentile rank of a GRE score of 667, we need to determine how many scores fall below this value in a normal distribution with a mean of 500 and a standard deviation of 90.

First, we calculate the z-score, which represents the number of standard deviations a particular score is from the mean. The z-score can be calculated as (667 - 500) / 90 = 1.8556.

Next, we use a z-table or a statistical calculator to find the area under the normal curve to the left of the z-score. This area represents the percentile rank.

Looking up the z-score in the table or using a calculator, we find that the percentile rank of a score of 667 is approximately 96.6%.



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Here are some true equations that use the distributive property to distribute 8(3+6):

8(3+6) = 8(3) + 8(6) = 24 + 48 = 72

8(3+6) = (83) + (86) = 24 + 48 = 72

8(3+6) = (83) + 68 = 24 + 48 = 72

The distributive property can be used to distribute any number of factors over a sum. In this case, we are distributing the factor 8 over the sum 3+6. We can do this by multiplying each term in the sum by 8 and then adding the products together. This gives us 24 + 48 = 72.

Levi charges customers a fee of $60 just to come to their houses and then $1 per minute that he is there. Levi earned $80 and Tom earned $100.

An equation is a mathematical statement that asserts the equality of two expressions. It consists of two sides, often referred to as the left-hand side (LHS) and the right-hand side (RHS), connected by an equal sign (=). The equal sign indicates that the two sides have the same value or are equivalent.

Levi charges customers $60 as a base fee and then $1 per minute that he spends on the job. Tom charges $40 for a home visit and $3 per minute. Levi and Tom spent the same amount of time working and earned the same amount of money. Let's calculate their earnings.

Let's assume they worked for t minutes each. Levi's earning equation will be:

E1 = 60 + t

Tom's earning equation will be:

E2 = 40 + 3t

Their earnings are the same so:

60 + t = 40 + 3t

60 - 40 = 3t - t

t = 20

So they both worked for 20 minutes. Let's substitute 20 into either of their equations and find their earnings:

E1 = 60 + t = 60 + 20 = $80

E2 = 40 + 3t = 40 + 3(20) = $100

Therefore, Levi earned $80 and Tom earned $100.

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They should choose parking lot 1 as it would cost less for them to park for 6 hours. There are two parking lots available, parking lot 1 and parking lot 2, and the charges for parking in both the lots differ. Parking lot 1 charges $30 for the first 2 hours and 8$ per hour for each additional hour.

On the other hand, parking lot 2 charges $40 for the first two hours and $5 for each additional hour. The total duration for which Nahuel and his father need to park is 6 hours. Now, to find which parking lot would be more feasible, we will calculate the charges for both parking lots individually.

Charges for parking in parking lot 1 for 6 hours = $30 + $8 * 4 = $62 Charges for parking in parking lot 2 for 6 hours = $40 + $5 * 4 = $60Therefore, parking lot 1 would be the better option as it would cost less for them to park for 6 hours. They would only need to pay $62 in parking lot 1 while they would need to pay $60 for parking lot 2. Hence, Nahuel and his father should choose parking lot 1.

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If Nahuel and his dad need to park for 6 hours, they should choose Lot 2 as it would be cheaper for them.

According to the given information,

Parking lot 1 charges $30 for the first 2 hours and $8 per hour for each additional hour.

Therefore, parking for 6 hours would cost,

⇒ $30 for the first 2 hours + 4 additional hours x $8 per hour = $62

On the other hand,

Lot 2 charges $40 for the first 2 hours and $5 for each additional hour. Therefore, parking for 6 hours would cost,

⇒ $40 for the first 2 hours + 4 additional hours x $5 per hour = $60

So, if Nahuel and his dad need to park for 6 hours, they should choose Lot 2 as it would be cheaper for them.

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To gather evidence supporting or refuting the scientist's claim about the fabric's water repellency, an experiment can be conducted by comparing the water repellency of the two fabrics using a standardized testing method, such as the water droplet test.

The experiment can be designed as follows: Select two fabrics, one being the fabric the scientist claims to be better at repelling water and the other being a different fabric for comparison. Cut identical-sized samples from each fabric and ensure they are in the same condition, such as cleanliness and moisture content.

To test the water repellency, a standardized method like the water droplet test can be employed. This involves placing a droplet of water on each fabric sample and observing how the water interacts with the surface. Factors to consider include the rate of absorption, spreading, or beading of the water droplet. Repeat the test multiple times to ensure consistency.

Measurements and observations should be recorded for both fabrics, noting any differences in water repellency. Statistical analysis can be performed to evaluate the significance of the observed variations.

If the fabric claimed to repel water shows consistently higher rates of beading or slower absorption compared to the other fabric, it would provide evidence supporting the scientist's claim. Conversely, if the two fabrics exhibit similar water repellency characteristics, it would challenge the claim.

By conducting this experiment with proper controls and measurements, evidence can be generated to either support or refute the scientist's claim about the fabric's water repellency.

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The cost of ingredients for a cake is $3.49, and the total weekly sales from selling 150 cakes are $976. We will calculate the food cost percentage. The food cost percentage is approximately 35.76%.

To calculate the food cost percentage, we need to determine the portion of the total sales that goes towards the cost of ingredients. The food cost is the cost of ingredients, and the total sales is the revenue generated.

First, we calculate the cost per cake:

Cost per cake = Cost of ingredients / Number of cakes sold

Cost per cake = $3.49 / 150 cakes

Cost per cake ≈ $0.0233

Next, we calculate the total cost of ingredients for all the cakes sold:

Total cost of ingredients = Cost per cake * Number of cakes sold

Total cost of ingredients = $0.0233 * 150 cakes

Total cost of ingredients = $3.495

Now, we can calculate the food cost percentage:

Food cost percentage = (Total cost of ingredients / Total sales) * 100

Food cost percentage = ($3.495 / $976) * 100

Food cost percentage ≈ 0.3576 * 100

Food cost percentage ≈ 35.76%

Therefore, the food cost percentage is approximately 35.76%.

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The tax amount, rounded to the nearest cent, is approximately $3.81.

To find the tax amount given the original price and the tax rate, we can multiply the original price by the tax rate.

Original price: $58.73

Tax rate: 6.5%

To calculate the tax amount, we need to convert the tax rate from a percentage to a decimal by dividing it by 100:

Tax rate = 6.5% = 6.5/100 = 0.065

Now we can calculate the tax amount by multiplying the original price by the tax rate:

Tax amount = $58.73 * 0.065

Tax amount ≈ $3.81 (rounded to the nearest cent)

Therefore, the tax amount, rounded to the nearest cent, is approximately $3.81.

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The angles at which the fences of the three sides will meet are approximately: 39.919°, 45.305° and 94.776°

To determine the angles at which the fences of the three sides will meet in Brian's triangular plot of farm land, we can use the Law of Cosines. The Law of Cosines relates the side lengths and angles of a triangle and can be used to find an angle when the lengths of the three sides are known.

In this case, the lengths of the three sides of the triangle are given as follows:

a = 1.1 miles

b = 1.5 miles

c = 2.2 miles

Using the Law of Cosines, we can calculate the angles:

Angle A:

cos(A) = (b^2 + c^2 - a^2) / (2 * b * c)

cos(A) = (1.5^2 + 2.2^2 - 1.1^2) / (2 * 1.5 * 2.2)

cos(A) = (2.25 + 4.84 - 1.21) / (3.3)

cos(A) = 5.88 / 3.3

cos(A) ≈ 1.778

Angle B:

cos(B) = (a^2 + c^2 - b^2) / (2 * a * c)

cos(B) = (1.1^2 + 2.2^2 - 1.5^2) / (2 * 1.1 * 2.2)

cos(B) = (1.21 + 4.84 - 2.25) / (2.42)

cos(B) = 3.8 / 2.42

cos(B) ≈ 1.571

Angle C:

Since the sum of the angles in a triangle is always 180 degrees, we can calculate Angle C by subtracting the sum of Angle A and Angle B from 180 degrees:

Angle C = 180 - (A + B)

Angle C = 180 - (acos(1.778) + acos(1.571))

Calculating the arccosine values using a calculator:

Angle C ≈ 180 - (39.919° + 45.305°)

Angle C ≈ 94.776°

Therefore, the angles at which the fences of the three sides will meet are approximately:

Angle A ≈ 39.919°

Angle B ≈ 45.305°

Angle C ≈ 94.776°

These angles determine the meeting points of the fences in Brian's triangular plot of farm land.

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The expressions that have a value of 15 when x = 15 include the following:

A. x/3 + 10

C. (3,015 ÷ x) - 186

Based on the information provided, we would determine the output value of each of the given expression by substituting 15 for the value of x as follows;

Expression = x/3 + 10

Expression = 15/3 + 10

Expression = 5 + 10

Expression = 15 (True).

Expression = 15,521 ÷ x

Expression = 15,521 ÷ 15

Expression = 1034.73 (False).

Expression = (3,015 ÷ x) - 186

Expression = (3,015 ÷ 15) - 186

Expression = 201 - 186

Expression = 15 (True).

Expression = 20x² ÷ 30

Expression = 20(15)² ÷ 30

Expression = 4500 ÷ 30

Expression = 150 (False).

Expression = 20x²/5 - 25

Expression = 20(15)²/5 - 25

Expression = 900 - 25

Expression = 875 (False).

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

The correct option for the question is C.1 1/2 kg.How to calculate the combined amount of dog food given in one day?Combined amount of dog food refers to the total amount of food given to all the dogs.

To calculate it, we will add up the amounts of food given to each dog.For example, if 1 kg of food is given to one dog and 1/2 kg of food is given to another, then the combined amount of food given in one day would be 1 kg + 1/2 kg = 1 1/2 kg.

Therefore, the best estimate for the combined amount of dog food given in one day is 1 1/2 kg.

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Amir will reach Teen Summit in 25 seconds, while Quader will reach Teen Summit in 26.67 seconds.

To solve this problem, let's break it down into two parts: the time it takes for Amir to reach Teen Summit and the time it takes for Quader to reach Teen Summit.

Let's start with Amir:

Amir's rate is 2 meters every second, so the time it takes for him to travel 50 meters is:

Time taken by Amir = Distance / Rate

= 50 meters / 2 meters/second

= 25 seconds

Now let's move on to Quader:

Quader started 10 meters ahead, so he only needs to travel 40 meters to reach Teen Summit.

Quader's rate is 3 meters every 2 seconds, so the time it takes for him to travel 40 meters is:

Time taken by Quader = Distance / Rate

= 40 meters / 3 meters/2 seconds

= 26.67 seconds

Since Quader's time is greater than Amir's time, Quader will reach Teen Summit after Amir.

Therefore, Amir will reach Teen Summit in 25 seconds, while Quader will reach Teen Summit in 26.67 seconds.

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In the desert community, 19% of the total area is desert, while the remaining area is occupied by houses. No squares represent houses, shops, or parks in the grid.

In the given desert community, the total area is represented by a 100x100 grid, with each square representing an equal portion of the community. The prompt states that 19% of the area is desert, so 19 squares in the grid would represent the desert region.

Since the rest of the area is occupied by houses, we need to find the number of squares that would represent houses. The prompt does not provide this information, so we cannot place any squares on the grid for houses.

Similarly, no squares can be placed for shops or parks, as the prompt states that 0% of the area is occupied by them. Therefore, the grid remains empty for these features.

To summarize, the grid representation of the desert community would consist of 19 squares for the desert region, while no squares would be allocated for houses, shops, or parks, as their percentages are mentioned as 0%.

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All three types of taxes fall under the category of indirect taxes because they are not directly based on an individual's income or wealth but rather on the consumption of goods, services,

or use of specific infrastructure.The types of taxes you mentioned, namely excise taxes, sales taxes, and tolls, are all examples of indirect taxes. Indirect taxes are imposed on goods, services, or transactions rather than directly on individuals or entities.

They are typically collected by intermediaries, such as businesses or service providers, who then pass on the tax burden to the consumers.

Excise taxes are levied on specific goods, such as alcohol, tobacco, gasoline, or luxury items. They are often intended to discourage the consumption of these goods or to generate revenue for the government.

Sales taxes are imposed on the sale of goods and services and are usually calculated as a percentage of the purchase price. They are collected by the seller from the buyer at the point of sale.

Tolls, on the other hand, are charges imposed on the use of certain infrastructure, such as roads, bridges, tunnels, or highways.

They are typically collected at toll booths or through electronic systems, and the revenue generated is used for the maintenance and construction of the infrastructure.

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Answer:

NP=28

Step-by-step explanation:

20/35=x/49

cross multiply

35x=20x49

35x=980

x-980/35

x=28

Farid can make a square by using a combination of two short sticks and two long sticks.

To form a square without breaking or overlapping the sticks, the length of each side of the square must be equal. In this case, we have two types of sticks: short ones measuring 1 cm and long ones measuring 3 cm.

To determine which combinations can form a square, we need to consider the lengths of the sides and the total length of the sticks.

1. Using only short sticks (1 cm each):

To form a square, we need four equal sides. Since each short stick measures 1 cm, the total length of the four sides would be 4 cm. This combination does not work as the total length is too small to form a square.

2. Using only long sticks (3 cm each):

Similarly, using only long sticks would result in a total length of 12 cm for the four sides. This combination also does not work as the total length is too large to form a square.

3. Using a combination of short and long sticks:

In this case, we can combine short and long sticks to create a square. For example, using two short sticks and two long sticks would give us a total length of 2 cm + 2 cm + 3 cm + 3 cm = 10 cm. This combination can form a square with each side measuring 2.5 cm.

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In his current situation, it will take Roger 10 months to save for his deposit and finally move out.What is Roger's monthly income?Roger's monthly income is $2000.How much are his current expenditures living with his father?Roger's current expenditures living with his father is $800 a month.

How much will be Roger's monthly rent in the new apartment?Roger's monthly rent in the new apartment will be $1200 a month. How much will be the Deposit required?The Deposit required is first and last month’s rent. What is the total amount of Deposit?The total amount of Deposit will be $2400.How much money can Roger save per month? Roger can save $2000 - $800 = $1200 a month.

How many months will it take Roger to save for his Deposit?It will take Roger $2400 / $1200 = 2 months to save for his Deposit.How long will it take Roger in his current situation?It will take Roger 2 months to save for his Deposit in his current situation. Thus, Roger will need to save for $1200 a month to move into the apartment and it will take him $2400 / $1200 = 2 months to save for his Deposit.

Therefore, he will need 10 months (8 months to save the money and 2 months to have the money) to move out.

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The solution to the system of equations is (-4, 4).

The system of equations is: x + y = -8 and x - y = 0
Mr. Brown can find the solution to the system of equations by solving it using the elimination method as follows:
x + y = -8 (Equation 1)
x - y = 0 (Equation 2)
Add Equation 1 and Equation 2.
Doing so will eliminate y from the equations and solve for x.
x + y + x - y = -8 + 0
2x = -8 x = -4
Substitute x = -4 into any of the original equations to solve for y.
Let's use Equation 2: x - y = 0 -4 - y = 0
y = -(-4) y = 4

Therefore, the solution to the system of equations is (-4, 4).

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It is advised that your friend should purchase an additional 15 liters of paint to complete the painting of all the walls and ceiling.

Capacity, specifically in the context of measuring liquids, is often expressed in liters (L). Liters are a unit of volume commonly used to quantify the amount of liquid a container can hold or the quantity of liquid present.

Understanding liters as a unit of capacity enables us to measure and compare the volumes of different containers, estimate the amount of liquid required or available, and make precise measurements for various practical purposes.

In order to find out how much paint your friend needs to buy, the first step is to determine the area that has not been painted yet.

The total area of the garage that needs to be painted is 75 m² and so far she has painted 9 m².

Therefore, the area that needs to be painted is 75 m² - 9 m² = 66 m².Now, since your friend has used 2 liters of paint to cover 9 m² of the garage, it means that she uses :

2 liters / 9 m² = 0.22222 liters of paint per square meter of the surface.

Therefore, to cover the remaining 66 m² of the garage, she will need:

0.22222 liters/m² × 66 m² = 14.66652 liters or approximately 15 liters of paint.

It is, therefore, advised that your friend should purchase an additional 15 liters of paint to complete the painting of all the walls and ceiling.

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Answer:

24

Step-by-step explanation:2x+42= 90

2x=90-42

2x=48

x=24

Step-by-step explanation:

2x°+42°=90°

2x+42°-42°=90°-42°

2x/2=48°/2

x=24°

But Iam not sure I just try

The rate of discount is 30%. The regular price of the television set is Php 1580, and it is being sold at a discount of 30%.

To find the sale price, we can use the formula:

Sale price = Regular price - (Discount rate × Regular price)

Substituting the given values, we get:

Sale price = 1580 - (0.30 × 1580)

Sale price = 1580 - 474

Sale price = 1106

Therefore, the sale price of the television set is Php 1106. This means that Mr. Edwin Lazo paid Php 13,600.00 for an item that originally cost Php 1580.00 but was on sale at Php 1106.00.

To calculate the rate of discount, we can use the following formula:

Discount rate = (Regular price - Sale price) / Regular price x 100%

Substituting the given values, we get:

Discount rate = (1580 - 1106) / 1580 x 100%

Discount rate = 474 / 1580 x 100%

Discount rate = 0.3 x 100%

Discount rate = 30%

Therefore, the rate of discount is 30%.

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Answer: 15

Step-by-step explanation:

Period=distance between 2 top points.

15