1. Graphically maximize P = 50X1 + 80X2

subject to: X1 + 2X2 <= 32
3X1 + 4X2 <= 84
X1, X2 >= 0

2.
Use Solver or QM for Windows to
Minimize: C = 10X1 +12X2 + 28X3
subject to: 4X1 + 2X2 + 3X3 >= 20
3X1 - X2 -4X3 <= 10
X1, X2, X3 >=0