Pls help ASAP i don’t have time to do this question I only have 10 minutes! Oh and there’s another question (find the value of “x”)

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)