Help plz really bad i suck at math

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2