Need help with these three pls!!!!!

Find an equation for the nth term of the arithmetic sequence.a16 = 21, a17 = -1 Which traits would Aristotle have used to classify sharks? Choose more than one answer. Do you think that climate change has been presented to you as doom and gloom throughout your life? Explain. The object below is a cubical lunch box having each edge as 10 cm.Find its surface area. A600 cm2 B360 cm2 C300 cm2 D36 cm2 Crowl Corporation is investigating automating a process by purchasing a machine for $793,800 that would have a 9-year useful life and no salvage value. By automating the process, the company would save $133,000 per year in cash operating costs. The new machine would replace some old equipment that would be sold for scrap now, yielding $21,200. The annual depreciation on the new machine would be $88,200. The simple rate of return on the investment is closest to a. 5.80% b. 11.12% c. 16.72% d. 5.12% Which word from the expert creates parallel structure ? Find the volume of the cone Identifying the Body's Responses toQuickCheckWhich type of response identifies a specific pathogen in the body?A(n)response A polynomial function has a root of -5 with multiplicity 3, a root of 1 with multiplicity 2, and a root of 3 with multiplicity 7. If thefunction has a negative leading coefficient and is of even degree, which statement about the graph is true?The graph of the function is positive on (-0, 5).The graph of the function is negative on (-5, 3)The graph of the function is positive on (-0, 1).The graph of the function is negative on (3,co)Mark this and returnSave and ExitSabem Question 17 In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce gaseous ammonia. This reaction is now the first step taken to make most of the world's fertilizer. Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 786. liters per second of dinitrogen are consumed when the reaction is run at 222.C and 0.35atm. Calculate the rate at which ammonia is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits. Explain what the similarities and difference between y=2cosx and y=2cosx-3. how to simply this equation In a right triangle, sin (40 x) = cos (3x).What is the value of x? Find the compound interest on GHS 50,200 invested at 13% p.a. compounded annually for 3 years ( to the nearestGHS).Select one:A. GHS 19,578B. GHS 69,778OC. GHS 72,433D. GHS 22.233 what is 10 + x = 24? a put question in screen shot The price of a gallon of milk, in dollars, is measured in the PLEASE HELP FAST Which transformation preserves size and shape. Choose ALL correct answers A) Dilations B) Rotations C) Translations D) Reflections Question 2 Which transformations preserve orientation? A) Translations B) Rotations C) Reflections D) Dilations Which factor plays the greatest role in determining the climate in a highland region? proximity to large bodies of water elevation latitude ocean currents Could somebody answer these questions for me? Thanks! 1. What percentage of the earth is covered by water?2. What sorts of signals does the brain use to communicate sensations, thoughts and actions?3. Did dinosaurs and humans ever exist at the same time?4. What is Darwin's theory of the origin of species?5. Why does a year consist of 365 days and a day of 24 hours?