In Exercise, assume the cost function C(x) is measured in dollars. Complete the following:...

In Exercise, assume the cost function C(x) is measured in dollars. Complete the following:

(a) Determine the marginal cost function MC.

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(b) Evaluate and interpret MC(x) for the given production level x.

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(c) Evaluate the actual change in cost by evaluating C(x + 1) − C(x) and compare with the answer in part (b).