Exhibit 7-4 Marginal cost and revenue for a firm
UnitQuantity
Marginal Cost
Marginal Revenue
12
$  5
$9
13
    6
  9
14
    7
  9
15
    8
  9
16
    9
  9
17
  10
  9
In Exhibit 7-4, what is this firm's profit-maximizing rate of output?

A. 13.
B. 14.
C. 15.
D. 16.


Answer: D

Economics

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