Using the following system of inequalities find the maximum value of f -LRB- x , y -RRB- = 3x +9 y x ≥ 0 y ≥ 0 3x +2 y ≤ 18 6x +7 y ≤ 42 ?
Using the following system of inequalities find the maximum value of f -LRB- x , y -RRB- = 3x + 3y x ≥ 0 y ≥ 0 3x +2 y ≤ 18 6x +7 y ≤ 42 ?