Problem 6 : All airline needs to determine how best to meet its needs for in - flight meals on one of its international flights for the*{ { coming month . Based on anticipated passenger bookings , the airline* must purchase Good meals for the coming mouth . Meals may be purchased from any of three* particular suppliers . Each supplier's fixed ordering cost and cost per meal are provided in the Table . Each supplier has a maximum order size of 4000 meals . Furthermore , supplier I has a minimum order size of 500 meals ; the other two suppliers have minimum sizes of 100 meals each . The airline wants to determine how to minimize the total cost of purchasing the required meals . Using the Table , formulate and solve an IF model to help the airline find the best purchasing plan . Supplier costs Supplier 1 Supplier ? Supplier 3 Ordering cost $95. 00 $170.00 5200. 00 Cost per meal $9.25 $8. 50 $7. 95 Minimum and maximum order sizes from suppliers Supplier 1\\ Supplier ?* Supplier ] Maximum 4000 Minimum 500 100 100 a ) Define the decision variables b ) Define the objective function [ ) Define the constraints $ ) Determine an optimal solution