In Exercise, p refers to the demand function given in Example 7. Now assume that a second...

In Exercise, p refers to the demand function given in Example 7. Now assume that a second economist proposes an alternative model f for the demand function:

where n is the number of tee shirts that can be sold per month at a price of f(n) dollars per shirt.

Example 7 Using a demand function and function notation

Show that at a price level of $10 per shirt, the model p predicts more than twice as many sales per month as does the model f. Hint: Solve each of the equations p(n) = 10 and f(n) = 10, and interpret the results.