Janie must choose to either mow the lawn or wash clothes. If she mows the lawn, she will earn $30, and if she washes clothes, she will earn $45. She dislikes both tasks equally and they both take the
A. mow the lawn; bigger
B. mow the law; smaller
C. wash clothes; smaller
D. wash clothes; bigger
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The average benefit of n units of an activity is the（）
A. total benefit of n units divided by n
B. n times the total benefit of n units
C. extra benefit from carrying out one additional unit of the activity
D. n divided by the total benefit of n units
You want to buy a TV that regularly costs $250. You can either buy the TV from a nearby store or from a store that’s downtown. Relative to going to the nearby store, driving downtown involves addition
A. No, because you will only save 10%, which is less than 15%
B. No, because you will save more than $20
C. Yes, because you will save more than $20
D. Yes, because you will save 10%, which is better than nothing
Dividing the total cost of n units of an activity by n reveals the（）
A. units per cost
B. average cost
C. average benefit
D. marginal cost
The opportunity cost of an activity includes the value of（）
A. the least-best alternative that must be foregone
B. the chosen activity minus the value of the next-best alternative
C. all of the alternatives that must be forgone
D. the next-best alternative that must be foregone
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