Example 1

A credit card company charges one interest rate for the first 24 months, and a different interest rate after 24 months. If the minimum payment is made every month, and no other purchases are added, the piecewise function shown can be used to represent the amount owed on the card, y, for any number of months, x. Create a graph to show the charges for any number of months.
This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.