ABC, Inc. is a monopolist. The estimated demand function for its product is Qd = 120 - 0.8P + 12Y + 4A Where Qd denotes quantity demanded, P denotes price, Y denotes personal income (in thousands of dollars), and A denotes advertising expenditures in hundreds of dollars. ABC's marginal cost function is given as MC = 21 + 4Q Assume Y equals 3 and A equals 3 and fixed costs equal $1000
a. What is the inverse demand function? (The equation demand equation in the form P = a - bQd)?
b.What is the profit maximizing price and quantity of output for ABC, assuming it is an unregulated monopoly? What are its profits?
c.If fixed costs increase to $1200, what will happen to equilibrium price and quantity?