a$.$ What are the optimal solution and the optimal objective function value?

b$.$ By how much does the unit profit of sofas have to increase in order for us to consider producing it$?$

c$.$ How much are we willing to pay for an extra dollar for the budget?

d$.$ How much can the available labor $($hr$)$ change without any change in the basic variables of the optimal

solution?

e$.$ A supplier offers to sell the company one yard $($yd$)$ of upholstery at the price of $$30.$ Should the

company buy? Why?