As a consultant, you are reviewing the financial documents of a firm. as is often the case, the data are limited. specifically, in this case, you are only able to observe that the firm produced 10 units of output, and that the average cost of production equaled $20. you do know (from other sources) that the firm's fixed cost equals $100. you also know that producing 10 units minimizes the firm's average cost of production. the firm that hired you to analyze these data wants to know what the marginal cost was for the tenth unit of output that the firm produced. your answer is $ part 2 (1 point) see hint the firm that hired you also wants to know the variable cost for producing the 10 units of output. your answer would be that the variable cost equals $