The binding constraints for this problem are the first and second.

Min	x1 + 2x2
s.t.	x1 + x2 300
	2x1 + x2 400
	2x1 + 5x2 750
	x1 , x2 0

a. Keeping c2 fixed at 2, over what range can c1 vary before there is a change in the optimal solution point?

b. Keeping c1 fixed at 1, over what range can c2 vary before there is a change in the optimal solution point?

c. If the objective function becomes Min 1.5x1 + 2x2, what will be the optimal values of x1, x2, and the objective function?

d. If the objective function becomes Min 7x1 + 6x2, what constraints will be binding e. Find the dual price for each constraint in the original problem.