A. Graph the profit maximization for a perfectly competitive firm. Show equilibrium profit and quantity.

B.Show and explain the situation in which a profit maximizing, perfectly competitive firm is earning a positive economic profit. Be sure to label the profit maximizing level of output and shade in the area that represents profit.

C. Show and explain the situation in which a profit maximizing, perfectly competitive firm is earning a negative profit and chooses to continue to produce in the short-run.

D. Show and explain how B would change if the firm chose to shut down. What would have to happen to cause the firm to shut down.