Wendy's produces a chili mix in 1,000 pound batches. The mixture contains two ingre- dients - chicken and beef. The cost per pound of each of these ingredients is as follows: Ingredient Cost-per-Pound Chicken $3 Beef $5 Each batch has the following recipe requirements: 1. At least 500 pounds of chicken 2. At least 200 pounds of beef The ratio of chicken to beef must be at least 2 to 1. Wendy's wants to graphically calculate the optimal mixture of ingredients that will minimize cost.