Chapter 4 - Quadratic Functions and Equations - 4-2 Standard Form of a Quadratic Function - Practice and Problem-Solving Exercises - Page 206: 32

Price = $100 Revenue = $25000

Essentially, this is asking for the x and y-coordinate of the vertex (because the maximum will occur then) In $ax^2+bx+c$ form, a = -2.5, b = 500, c = 0. $p = \frac{-b}{2a} = \frac{-500}{2*-2.5} = 100$ $R(100) = -2.5*100^2 + 500*100 = 25000$