1.Based on marginal analysis, what is the profit-maximizing rate of output for the firm?

Average Total Marginal Marginal Average Variablel Output Total Cost Revenue Profit Cost Revenue Total Cost Cost DOYOUGONPO O XXX XXX 10 3 4.00 10 7.00 S 4.00 9 20 11 S 2.00 S 10.00 S 4.50 S 3.00 10 30 20 1.00 S 10.00 S 3.33 S 2.30 12 40 28 S 2.00 S 10.00 S 3.00 S 2.25 16 50 34 S 4.00 S 10.00 S 3.20 S 2.60 22 60 38 S 6.00 S 10.00 S 3.67 S 3.17 30 70 40 S 8.00 S 10.00 S 4.29 S 3.86 40 80 40 S 10.00 S 10.00 S 5.00 S 4.63 52 90 38 $ 12.00 S 10.00 S 5.78 S 5.44 10 68 100 32 16.00 $ 10.00 S 6.80 S 6.50