1. 8.11 Pricing & Marketing Strategy Pricing
Maximize Sales : 20X X2 + 12X3 – 65,000 X4
X1 : Dollars spend on advertising
X2 : Dollars spend on store display
X3 : Dollars spend in on-hand wallpaper inventory
X4 : Percentage markup taken above wholesale cost of a roll

2. 11.15 Pure Integer Programming
Maximize annual passenger-carrying capability
Z = 125,000 X1 + 81,000 X2
X1 : Boeing 757
X2 : Boeing 767
Subject to :
Maximum Quantity 1 X1 + X2 ≤ 17
Maximum Quantity 2 X ≥ 1/3 (X1 + X2)
Maximum Fund 80,000,000 X ,000,000 X2 ≤ 1,600,000,000
Maximum Maintenance Cost 800,000 X ,000 ≤ 8,000,000

3. So, in order to maximize annual passenger-carrying capability the airline must purchased 3 units of Boeing 757 and 11 units of 767 with 1,266,000 capacity