Question: A motorist notes the gasoline gauge and estimates there are about 9 gal in the tank, but knows the estimate may be off by as

A motorist notes the gasoline gauge and estimates there are about 9 gal in the tank, but knows the estimate may be off by as much as 1 gal. This means we can write |n − 9| ≤ 1, where n is the number of gallons in the tank. Using this inequality, what distance can the car go on this gas, if it gets 25 mi/gal?

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