What is equivalent to the unit rate of 32 miles per gallon

12 miles per hour  This is a fraction equal to
30 miles ÷ 2.5 hours

We want a unit rate where
1 is in the denominator,
so we divide top and bottom by 2.5

30 miles÷ 2.52.5 hours÷ 2.5=12 miles1 hour=12 mileshour= 12 miles per hour

38 dollars is your answer.