per unit $30 MC 24 ATC 22 E 20.80 20 18 Demand MR 62 83 104 Quantity Figure 15-6 shows the cost and demand curves for a monopolist. 1. The profit maximizing price is $_ and quantity is 2. The firm would produce an efficient output at point 3. The mark up is $ 4. The economic profit is $ 5. If the industry was perfectly competitive, the price charged would be $ and the quantity produced would be units