The production function of an online retailer that hires unskilled (U)

and semiskilled (S) workers in its distribution division is given by the equation Q(U,S) = 2U + 4S.

a. What is the marginal product of unskilled labor?

b. What is the marginal product of semiskilled labor?

c. Unskilled workers earn the minimum wage of $7.25 per hour and semiskilled workers are paid $10 per hour. Both worker types work 40 hours a week. If the weekly operating budget is $12,000, how many skilled and unskilled workers should the distribution division hire?