Question: From the linear programming model formulated in Problem 8 and solved graphically in

a) Determine the sensitivity ranges for the objective function coefficients, using graphical analysis.

b) Verify the sensitivity ranges determined in (a) by using the computer.

c) Using the computer, determine the shadow prices for additional hours of production time on line 1 and line 2 and indicate whether the company would prefer additional line 1 or line 2 hours.

d) What would be the effect on the optimal solution if the company could supply only 10 tons of high-grade aluminum?