Jessie put 8 gallons of gas in her car at $3.529 per gallon. Rounded to the nearest cent, how much does she owe?
A$28.20
B$28.32
C$28.13
D$28.23
Answer & Solution
Correct answer: D. $28.23
1. Multiply the price per gallon by the number of gallons: 3.529 x 8.
2. Multiplying gives 28.232.
3. Rounding 28.232 to the nearest cent means looking at the thousandths digit, 2, which is less than 5, so the hundredths digit stays the same.
4. This gives $28.23, so Jessie owes $28.23 for the gas.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.2 Decimal Operations_
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