e. If the manager can obtain either additional bark or additional storage space, which one should she choose, and how much? h. If the amount of bark available decreased by 15 kg, machine time available decreased by 27 minutes, and storage capacity increased by 5 bags, would this fall in the range of feasibility for simultaneous changes? If so, what would the value of the objective function be? 4. A garden supplies store prepares various grades of pine bark for mulch: nuggets (x), mini- nuggets (x), and chips (x3). The process requires pine bark, machine time, labour time, and storage space. The following LP model has been developed. (LO4) Maximize 9x + 9x2 + 6x3 (profit) Subject to Bark 5x1 + 6x + 3x3 600 kg Machine 2x + 4x2 + 5x3 660 minutes Labour 2x1 + 4x + 3x3 480 hours Storage 1x + 1x + 1x3 150 bags X1, X2, X3 20