2.2.2 Solution of a Minimization Model Example 2.2-2 (Diet Problem) Ozark Farms uses at least 800 lb of special feed daily. The special feed is a mixture of corn and soybean meal with the following compositions: Feedstuff Com Soybean meal 1b per lb of feedstuff Protein Fiber .02 06 Cost (5/16) .30 .90 The dietary requirements of the special feed are at least 30% protein and at most 5% fiber. The goal is to determine the daily minimum-cost feed mix. The decision variables of the model are: x = lb of corn in the daily mix x2 = lb of soybean meal in the daily mix The objective is to minimize the total daily cost (in dollars) of the feed mix, that is, Minimize z = 3x + 9x2 Prove that the linear operations method of the above problem is: Minimize z = .3x1 + 9x2 subject to x + y 2 800 .21x - 30x3 50 .03X1 - .01x220