Mallory furniture buys two products for resale: big shelves (b) and medium shelves (m). each big shelf costs $500 and requires 100 cubic feet of storage space, and each medium shelf costs $300 and requires 90 cubic feet of storage space. the company has $75,000 to invest in shelves this week, and the warehouse 18,000 cubic feet of storage space.

profit for each big shelf is $300 and the profit for each medium shelf is $150.

what is the objective function?

a. max z = $300m + $150b
b. min z = $300b + $150m
c. max z = $500b + $300m
d. max z = $300b + $150m