Feng is thinking of mowing lawns over the summer.His friend Jason mows lawns,and he says the marginal cost of mowing the fourth lawn in a day is $40.Feng thinks about it and realizes that the total cost of mowing four lawns is:

A) $160.
B) $40.
C) $80.
D) not possible to determine from the information provided.

Question

Elizabeth Manaoat · Accepted Answer

Final Answer : D, Explanation :  The marginal cost refers to the cost of producing one additional unit (in this case, mowing one additional lawn), not the total cost. Without information on the costs of the first three lawns, the total cost of mowing four lawns cannot be determined.

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