Minimize (costs)        Z = 4X1 +
8X2

           
Subject to       
           
Fiber              
5X1 + 8X2 > 40

                                   
           
Protein           
6X1 + 4X2 > 24

                                   
           
                       
X1, X2 > 0

Find the range of optimality for each objective function
coefficient.

What is the dual value (AKA –“shadow price”) for the RHS of the
protein constraint?

What is the range of feasibility of the dual value for the RHS
of the protein constraint?

What impact on total cost would a decrease of 2 units in the RHS
of the protein constraint have? Please explain the rationale for
your answer.