Minimize Z = 5x + 3y \text{ subject to the constraints} \[ 4x + y \geq 80, \quad x + 5y \geq 115, \quad 3x + 2y \leq 150, \quad x \geq 0, \quad y \geq 0. \]
Step 1: Graph the constraints to form the feasible region.
Step 2: The objective function is \( Z = 5x + 3y \). Find the corner points of the feasible region.
Step 3: Evaluate \( Z \) at each corner point.
Step 4: Choose the corner point that gives the minimum value of \( Z \).
Find the minimum value of ( z = x + 3y ) under the following constraints:
• x + y ≤ 8
• 3x + 5y ≥ 15
• x ≥ 0, y ≥ 0