Jessica needs to get her bicycle fixed. The mechanic at the shop charges $30 per hour for labor, and the new parts cost $48.50. When the job was done, the total cost of fixing Jessica's bicycle came to $123.50. The technician at the bike shop said he spent 2.5 hours fixing Jessica's bike, but she's not sure if the price is right. How can Jessica determine whether the technician charged her the correct amount? This type of problem can be solved by using equations. In this lesson, you will explore how to solve equations that require more than one step.