9 : 2 = 18 : 4
As: 9 x 2 : 2 x 2 = 18 : 4
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36 : 8 = 18 : 4
As: 18 x 2 : 4 x 2 = 36 : 8
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72 : 16 = 18 : 4
As: 18 x 4 : 4 x 4 = 72 : 16
So r is a number that when you add to t it will increase so its
T + r
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:)
answer:
the answer is going to be ½