The final simplex tableau is as follows: basic p 0 x 0 9/4 Row 0 1 0 s2 -4/3 rhs 12 0 s1 4/3 -1/4 5/18 9 7/18 25/2 -- - Answer the following questions: a) The optimal objective function value is ____; the value of x is - __; the value of y is b) The shadow price of the first constraint is c) The shadow price of the second constraint is d) Find the new value of the objective function when b1 is changed from 24 to 33. e) Find the new value of the objective function when b2 is changed from 30 to 21. f) The range of values of 24 (bl) such that the values of x,y remain optimal is _