Total Marginal Marginal Marginal Quantity Price Revenue Revenue Total Cost Cost Total Profit Profit 0 145 0 15 15 1 135 135 135 45 30 90 105 2 130 260 125 85 40 175 85 3 125 375 115 135 50 240 65 4 120 480 105 195 60 285 45 5 115 575 95 265 70 310 25 6 110 660 85 345 80 315 5 7 105 735 75 435 90 300 -15 8 100 800 65 535 100 265 -35 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? () ()