7 The following is a simplex table for a linear programming model. Complete this table, fill in the "?" marks and then answer the questions below. 5 7 5 0 0 M Cj Quantity X1 X2 X3 S1 S2 A Basic Variables XI AI 1 775 S M 0 35 35 35 ? -5/7 0 3/5 OO S2 Oola 5/3 0 7/7 ? 2 1 -5/5 ? ? Zj Zj - G 0 1 0 ? ? 1 ? ? 2 2 a. What happens to the value of s2 when the value of si increases by one unit? b. How much the value of x2 should increase to remove xi from the solution? c. How much the value of si should increase to remove s2 from the solution? d. What does the value at the x3 column of the zj-crow mean