Feng is thinking of mowing lawns over the summer.His friend Jason mows lawns,and he says that 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:

Question

Quizplus · Accepted Answer

The marginal cost of mowing the fourth lawn is $40, but without information on the costs of mowing the first three lawns, the total cost of mowing four lawns cannot be determined.

Feng Is Thinking of Mowing Lawns Over the Summer