On average, Anna can drive 31 miles on every gallon of gasoline. If she fills up her tank for $2.19 per gallon, how much will it cost her to drive 434 miles?

Answer 1

If Anna can drive 31 miles on every gallon of gasoline, then to drive 434 miles she will need 434/31 =<<434/31=14>>14 gallons.
Since she fills up her tank for $2.19 per gallon, to drive 434 miles it will cost her 2.19*14 = $30.66. Answer: \boxed{30.66}.