Explain how to determine if a given rate is also a unit rate

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

If my mom gets $13.05 an hour, and she works from 3: 30 to 10: 45 in the morning, how much money does my mom make?