Question 659605
To find the distance traveled,
23,589.1 (ending miles) - 23,134.8 (starting miles) = 454.3 miles

In a 454.3 mile trip, the car was filled with 15.4 gallons of gas, so miles per gallon would be determined as:
454.3 m / 15.4 g = 29.5 m/g (miles per gallon)