1. Consider the following LP formulation: Minimize z = 0.3x1 + 0.9x2 Subject to x1 + x2 ≥ 800 0.21x1 0.03x1 - 0.30x2 ≤ 0 0.01x2 ≥ 0 X1, X2 ≥0 a. Add the following constraint and change the objective to maximization: X1x21500 Find the optimum solution using Graphical Solution Method. b. Find all the corner point solutions (i.e., coordinates) along with their corresponding z values to confirm the optimum solution you determined in part a?