1/

Eunice's total benefit of consuming n pieces of cake is TB(n) = 72n - n²and cake is perfectly divisible and can be consumed at any arbitrary quantity (say, 5.24 pieces). Her marginal benefit is

MB(n) = 72 2n

Suppose the price of cake is $31 per piece. We would expect Eunice to consume[Answer]pieces of cake.

(In decimal numbers, with two decimal places, please.)

2/

Stephen likes eating ice-cream very much.Below is the marginal benefit (MB) Stephen will derive from the consumption of an additional n-th unit of ice-cream.

nMB ($)15424333842251662

From this information, we can compute that the total benefit from the consumption of 4 units of ice-cream is[Answer]dollars.

(In decimal numbers, with two decimal places, please.)