In nine months, 55.6 gallons were used. Find the unit rate.
0.618 gallons/month
6.18 gallons/month
9.27 gallons/month
12.36 gallons/month
To find the unit rate, divide the total amount of gallons used (55.6 gallons) by the number of months (9 months):
55.6 gallons / 9 months = 6.18 gallons/month
Therefore, the unit rate is 6.18 gallons/month.