Michael's Lawn Service charges $15 base fee plus $8 per hour to mow lawns. Michael charged Mrs. Brown $39 to mow her lawn. Which equation could Mrs. Brown use to find out how many hours (h) it took Michael to mow her lawn?
8 is the rate at which Mrs.Brown is getting paid, the 15 is the extra money that Mrs. Brown gets. And the sum of them is equal to 39 because 39 is the amount of money that Mrs. Brown got.
