first you think, if he can run 3.5 miles in 30 minutes. that means he can run 6 miles per hour. but if he increases that by 1/2 mile per hour then he can run 6.5 miles per hour.
Next, you set up your equation, y = 6.5x. Than, substitute in your numbers, y = 6.5(2).
Grain is used to feed cattle and livestock because it is healthy, cheap, ethical, and easy to grow in some American climates. Grain is the easiest and most cost-efficient way to feed livestock.
