For each level of output, calculate this manufacturer's marginal cost (MC) (For convenience, place the Marginal Cost between 0 and 1 boat on the second row, the Marginal Cost between 1 and 2 boats on the third row, and so on) Qty of boats TC Marginal Costs 0 $450,000 - 1 490,000 2 510,000 3 520,000 4 540,000 5 570,000 6 610,000 7 670,000 8 750,000 9 870,000