Which funtion represents a vertical stretch of an exponential function?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Factor and solve to find roots x squared -x - 90 =0