You are the manager of a private jet firm that specializes in selling private jets to the business community. Your goal is to determine the number of jets (Z) that must be produced in your plant each month in order to maximize profits. The total benefits (revenues) and costs to your firm of producing various quantities of jets are given in the first three columns of the table below. Based on this scenario, complete the table and answer the accompanying questions:

a. What level of jets maximizes net benefits?

b. What is the relation between marginal benefit and marginal cost at this level of Z?

(1) (2) (3) ( 4) (5) (6) (7) Control Total Total Net Marginal Marginal Marginal Variable Benefits Costs Benefits Benefit Cost Net Z B ( Z) C(Z) N(Z) MB(Z) MC(Z) Benefit MNB(Z) 0 0 200 10 2 380 30 540 60 4 680 100 UI 800 150 O 900 210 7 980 280 8 1,040 360 1,080 450 10 1,100 550