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.
not possible to determine from the information provided.

Question

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The Answer of 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.
not possible to determine from the information provided.

Feng Is Thinking of Mowing Lawns Over the Summer