How to find the missing angle if the first two are 48 and 87 degrees

Which of the following is the true for f(x) = 5cos

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.