Suppose that we now want to apply parametric linear programming analysis to this problem. Specifically, the right-hand sides of the functional constraints are changed to 20  2 (for constraint 1)

and 90   (for constraint 2), where  can be assigned any positive or negative values.

Express the basic solution (and Z) corresponding to the original optimal solution as a function of . Determine the lower and upper bounds on  before this solution would become infeasible.

D,I