### Home > INT3 > Chapter 2 > Lesson 2.3.1 > Problem2-139

2-139.

The amount of profit each day made by Math Starz, a company that sells math game apps, can be modeled by the equation $P(s)=-s^2+10s$, where $s$ is the sales price of an app in dollars. Their competitor, Comet Math has a different model for sales price and profits given by the table below.

 Sales price () Daily profit () $2.00$ $4.00$ $6.00$ $8.00$ $10.00$ $13.00$ $15.00$ $7.00$ $17.00$ $23.00$ $25.00$ $23.00$ $12.50$ $0.50$

What is the maximum profit the models predict for each company? Which company can sell their apps for less to make the maximum profit?

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