### Home > AC > Chapter 5 > Lesson 5.1.4 > Problem 5-42

5-42.

Write an equation representing each hippo.

Set the two equations equal to each other and solve for *x*.

*x* = 3 hours

Substitute 3 back into one of the original equations and solve for *y*.

Complete the tables in the eTool below to graph the results.

Click the link at right for the full version of the eTool: AC 5-42 HW eTool