You purchase a tractor that has a usable life of 9 years. After considering costs, you determine the mount of money you can make off this tractor is given below. At the end of the tractors life you can also ell it for scrap parts and get 300 dollars (i = 4%). What is the present value over the life of the tractor? 0 1 500 | 2 300 | 3 500 | 4 | 5 700 1900 | 6 -300 | 7 | 8 | 9 -100 18001 200