Inventory investment is
a. never positive.
b. often negative.
c. can be either negative or positive.
d. always positive.
C
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A) Sam pays $600 for 30 days of guitar classes. He attends an hour-long class every day. If, instead of attending class, he works at a part-time job, he would be paid $5 an hour. Or, he could work at a fast-food outlet and earn $9 per hour
Once he has already paid a nonrefundable fee of $600 to enroll in the class, what is his opportunity cost of attending each hour of class? b) Suppose workers decide to work more and consume less leisure when their hourly wage rate increases. What could explain this behavior?
The opportunity cost of a one-unit increase in an activity
A) is greater than the marginal benefit. B) is called rational cost. C) decreases as you do more of it. D) is called marginal cost. E) is measured by what the person is willing to give up to get one more unit of the activity.