max z = 5x + 8y subject x+1.5y lt; 900 1/2x + 1/3 lt; 300 1/8x + 1/4 lt; 100 x,y gt;0 a. Obtain the feasible region by solving graphically of

max z = 5x + 8y

subject

x+1.5y < 900

1/2x + 1/3 < 300

1/8x + 1/4 < 100

x,y >0

a. Obtain the feasible region by solving graphically of this model?

b. Determine the optimal value of the decision variables using the objective function approach?