Diana went on a trip over spring break. She traveled 479.4 miles and used 17 gallons of gas. At what unit rate did Diana use gasoline?
To find the unit rate at which Diana used gasoline, we need to divide the total distance traveled by the total amount of gas used.
Unit rate = Total distance / Total gas used
Unit rate = 479.4 miles / 17 gallons
Unit rate ≈ 28.2 miles per gallon
Therefore, Diana used gasoline at an approximate unit rate of 28.2 miles per gallon.