Answer:he only has 8 coins left
Step-by-step explanation:
20--?=8
8+12=20
If x-y=2 then x=2+y
And if you insert that in the first equation




Or

The first one is bigger so the answer is
Answer:
2
Step-by-step explanation:
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The best and most correct answer among the choices provided by the question is <span>(D) f(n) = 0.9 * f(n - 1) + 10, f(0) = 175, n > 0 .</span> <span>
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Hope my answer would be a great help for you.</span>