# Example 1

- Author:
- Walch Education

- Topic:
- Algebra, Equations, Function Graph

You purchase stock in a company for $500 per share. Each week after your purchase, the stock’s value is 80% of the previous week. What is the equation that models this scenario? What is its graph?

This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.