End behavior of y=(1/2) tho the power of 2

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

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.