4. Consider the linear program in Problem 3. The value of the optimal solution is 48. Sup- pose that the right-hand side for constraint 1 is increased from 9 to 10. a. Use the graphical solution procedure to find the new optimal solution. b. Use the solution to part (a) to determine the shadow price for constraint 1. c. The sensitivity report for the linear program in Problem 3 provides the following right- hand-side range information: Constraint Allowable Allowable Constraint R.H. Side Increase Decrease 123 1 9.000 2.000 4.000 2 3 10.000 8.000 1.000 18.000 4.000 Infinite What does the right-hand-side range information for constraint 1 tell you about the shadow price for constraint 1