Joe has moved to a small town with only one golf course. His demand curve is P = 120 2Q where Q is the number of rounds of golf he plays per year. The manager of the golf course offers Joe a special deal, where Joe pays an annual membership fee and can play as many rounds of golf as he wants to at $20 per round. The golf course's Marginal Cost is $20. E $120 / demand curve is P = 120 2