The value of the tractor after 7 years is 15,000$. To find the answer, multiple .10 by 50,000 to get 5,000, then multiple 5,000 by 7 to get 35,000. Then, subtract 35,000 from 50,000 to get 15,000. Hope this helps, have a great day! Ps. Please mark me brainliest:)
