Quantity 0 1 Price 155 145 140 135 130 125 120 115 110 Total Revenue 0 145 280 405 520 625 720 805 880 Marginal Revenue 145 135 125 115 105 95 85 75 What quantity should the firm produce to maximize profit? What is the marginal revenue at the optimal quantity? What is the marginal cost at the optimal quantity? What is the maximum profit? Marginal Cost 20 30 40 50 60 70 80 90 Total Profit -15 110 215 300 365 410 435 440 425 Marginal Profit 125 105 35 65 45 25