Use Solver to create a Sensitivity Report for question 22 at the end of Chapter 3 and answer the following questions.

a. Suppose the cost of the first two compounds increases by $1.00 per pound and the cost of the third compound increases by $0.50 per pound. Does the optimal solution change?

b. How does the solution change if the maximum amount of potassium allowed decreases from 45% to 40%?

c. How much does the cost of the mix increase if the specifications for CHEMIX change to require at least 31% sulfur? (Hint: Remember that the shadow price indicates the impact on the objective function if the RHS value of the associated constraint increases by 1.)