c. Explain the signs of the reduced costs for each of the decision variables. That is, considering the optimal value of each decision variable, why does the sign of its associated reduced cost make economic sense?
d. Suppose the cost per pound for Feed 3 increased by $3. Would the optimal solution change? Would the optimal objective function value change?
e. If the company could reduce any of the nutrient requirements, which one should it choose and why?
f. If the company could increase any of the nutrient requirements, which one should it choose and why?