Solving by Combining Like Terms
Mr. Ender bought 7 Hannah Montana t-shirts for a total of $90.93. Each t-shirt cost the same amount. How many Hannah Montana t-shirts did Mr. Cushman buy?
n is # of t-shirts
7n = 90.93 n = 12.99
Each t-shirt costs $12.99
An emergency plumber charges $65 as a call-out fee plus an additional $75 per hour. He arrives at a house at 9:00 and works to repair a water tank. If the total repair bill is $196.25, how many hours did it take to complete the repair?
1.75 hours (10:45am)