$15$ points$)$ Consider the Profit$/$Loss problem presented in problem $3$

a$.$ Use Goal Seek to determine the access price per copy that the publisher must

charge to break even with a demand of $3,500$ copies.

b$.$ Consider the following scenarios:

For each of these scenarios, the fixed cost remains $$160,000.$ Use Scenario

Manager to generate a summary report that gives the profit for each of these

scenarios. Which scenario yields the highest profit? Which scenario yields the

lowest profit?