### Home > CCA2 > Chapter 2 > Lesson 2.2.1 > Problem 2-81

Refer to problem 2-69 in Lesson 2.1.5.

The domain is all the possible -values that make sense in this problem. The range is all the possible

*-values that make sense in the problem. For example, there won’t be any negative*

*-values here.*

Use the eTool below to check your work.

Click the link at right for the full version of the eTool: *2-81 HW eTool*