Your office needs to deliver products to various sites in your town. you can hire a firm to make those deliveries for $200 per month plus mileage of 50 cents per mile based on an average of 1200 miles per month. or you can lease a truck for $350 per month and pay the related expenses. you estimate that the related expenses for gas, insurance and other are $480 per month. which would be the best deal, contracting or leasing? how much would you save in a year?

Your vet has placed your pet on a diet. the diet is to contain at least 12 mg of fat and at least 14 mg of protein per serving. these requirements are to be obtained from two food sources. source a contains 2 mg of fat and 2 mg of protein per serving. source b contains 1 mg of fat and 3 mg of protein per serving. if source a sells for $1.28 per serving and source b sells for $1.12 per serving, how many servings of each type should be purchased to satisfy the requirements at minimal cost?