### Home > CCA2 > Chapter 2 > Lesson 2.1.2 > Problem 2-22

2-22.

The amount of profit (in millions) made by Scandal Math, a company that writes math problems based on tabloid articles, can be found by the equation , where

*is the number of textbooks sold (also in millions). Find the maximum profit and the number of textbooks that Scandal Math must sell to realize this maximum profit.*

Draw the graph and look for the maximum value. One way to draw the graph is to start by making a table.

When you substitute a number into the equation, pay close attention to the Order of Operations. Here’s an example:

The maximum -value is

*. Therefore, the maximum profit is*