Well, it's surely at least one mile! 8900 is bigger than 5280. And how much more than one mile? let's subtract 5280 from 8900:
8900-5280=3620. now, this is less than another mile: so it's more than 1 but less than 2 miles: only options 3) and 4) are possible.[tex] \frac{3620}{5280}= \frac{362}{528}= \frac{181}{264}= 0.685[/tex]
so the exact answer is 1.685 and an approximation is 1.7 (because from digit 5 up we round up: 1.64 would be rounded down to 1.6)- the correct answer is 4)!!!
