Multiple Choice
Table 2.2
-Krystal runs a nail salon and needs to decide how many hours to stay open. Table 2.2 illustrates her marginal costs of staying open for each additional hour. Suppose that we observe Krystal staying open 4 hours per day. If she is following the marginal principle, what must her marginal benefit be?
A) $12
B) $18
C) $24
D) $30
Correct Answer:

Verified
Correct Answer:
Verified
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