) Consider the following linear programming formulation: Minimize cost = $1X₁ + $2X₂ Subject to: X₁ +3X₂ ≥ 90 8X1 + 2X₂ ≥ 160 3X₁ + 2X₂ ≥ 120 X₂ ≤ 70 (a) Graphically illustrate the feasible region to indicate which corner point produces the optimal solution. (b) What is the cost of this optimal solution?

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