The vertex form of the equation of a parabola is y = 4(x - 2)2 - 1. what is the standard form of the equation?
a. y = 4x2 - 16x + 2
b. y = 4x2 - 16x + 15
c. y = 4x2 - 3
d. y = 16x2 - 5 ?

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?