The distance traveled in a car varies directly as the amount of gasoline used. If a car travels 640 miles and uses 32 gallons of gas, find the constant of variation or miles per gallon (mpg).(1 point)
The constant of variation or miles per gallon (mpg) can be found by dividing the distance traveled (miles) by the amount of gasoline used (gallons).
Therefore, the miles per gallon (mpg) is:
640 miles / 32 gallons = 20 miles per gallon (mpg)