Independently consider each of the following changes in the Wyndor problem. In each case, apply the graphical method by hand to this new version of the problem, describe your conclusion, and then explain how and why the nature of this conclusion is different from the original Wyndor problem.

a. The unit profit for the windows now is $200.

b. To justify introducing these two new products, Wyndor management now requires that the total number of doors and windows produced per week must be at least 10.

c. The functional constraints for Plants 2 and 3 now have been inadvertently deleted from the model?