#### dawgs-mouse4

##### New member

- Joined
- Oct 20, 2010

- Messages
- 2

**A company buys a copier for $10,000. The IRS values the copier at $10,000(1 - n/20) after n years. After how many years will the copier be valued at $6500?**

I know that the answer is 7 years since I can see that n/20 = 5% per year, which is $500 per year in this case, but I don't know how to write the equation to model this. I'd really appreciate any help you can give me. Thanks! :?