b. Explain how the location of each curve graphed in question 9a would be altered if (1) total fixed cost had been $100 rather than $60 and (2) total variable cost had been

$10 less at each level of output.

10. Indicate how each of the following would shift the (1) marginal-cost curve, (2) average-variablecost curve, (3) average-fixed-cost curve, and

(4) average-total-cost curve of a manufacturing firm. In each case, specify the direction of the shift. LO4