Because of increased competition, Deegan is considering reducing the price of model DRB such that the new contribution to profit is $$175$ per unit. How would this change in price affect the optimal solution? Explain.

The objective coefficient range for model DRB shows a lower limit of $ $.$ Thus, the optimal solution change and the new value will be $ $.$

$($e$)$

If the available manufacturing time is increased by $500$ hours, will the dual value for the manufacturing time constraint change? Explain.

The allowable increase is minutes, so the dual value for this constraint change