A waiter earned $3 an hour and $45 in tips. The total amount he made was $60. Write and solve an equation to determine how many hours he worked.
3h + 45 = 60; He worked 5 hours.
20
-5(m - 5) = -40
m = 13
15
Lianna saves $25 every month in her savings account. She took out $100 on time to go shopping. She now has $450 in her account. Write and solve an equation to determine how many months Lianna has been saving money.