I would say the best estimate would be 9 because the real answer is 8.71 and if you round that to the 1 place the answer would be 9.
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The answer is b
hope this helps :)
Answer: 100$.
100% - 80% = 20%
20$ / 0.20(20%) =100$
i would just round 9.3 to 9 and 4.4 to 4 so i subtract 9-4 so that equals 5 so about a 5 mile diffrence