Cully furniture buys 2 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 $350 and required 90 cubic feet of storage space. the company has $75,000 to invest in shelves this week, and the warehouse has 18,000 cubic feet available for storage. profit for each big shelf is $300 and for each medium shelf is $150.the storage constraint is: 100b + 90m < = 18,000100b + 90s < = 18,000500b + 350m < = 75,000z = 300b + 150sz = 300b + 150mz = 150b + 300mz = 500b + 350m500b + 350s < = 75,000