What is the monopolist's profit at the profit-maximizing level of output? Demand, Costs, and Revenues Price (dollars) $130 120 110 100 90 80 Quantity Demanded 200 300 A 400 500 600 700 Marginal Revenue (dollars) $110 90 70 50 30 10 Marginal Cost (dollars) $25 32 40 50 62 77 Average Total Cost (dollars) $139.00 103.30 87.50 80.00 77.00 77.00