8. Consider the following multiobjective model. The decision maker thinks that achieving 50, 10 and 20 goal levels for each of the objectives respectively would be satisfactory. Convert the model to a goal program minimizing the weighted sum of goal violations using the weights 5, 3, 2 for the corresponding objectives. (8 P) Max Z1 = X1 + 5x2 + 7x3 Min Z2 = x2 X3 Min Zz = 10x1 - 5x2 S.t. 2x1 + 3x2 + 5x3