Question 2: Given an optimal simplex tableau of a maximization problem and all 5 constraints and X4, X5, X6 decision variables. Basic z X1 X2 X3 X4 X5 X6 Right Side z 0 3 0 5 9 X1 0 1 0 2 0 1 2 X3 0 0 0 1 1 0 4 2 X5 0 0 -2 0 -1 1 3 1 Part a) Give the optimal solution for decision variables. Part b) Give the optimal value for dual decision variables. Parte) Find az Interpret this number aby Part d) If you could buy an additional unit of the first resource for a cost of 5/2, would you do this? Why? Parte) Find the objective value 8. Part f) Find the range for objective function coefficient of xy that will keep the current solution optimal