### Home > AC > Chapter 5 > Lesson 5.1.3 > Problem 5-31

5-31.

Mailboxes Plus sends packages overnight for

Write equations for both brands.

total cost

*weight in ounces*

Set the equations equal to each other to solve for .

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Click the link at right for the full version of the eTool: *AC 5-30 HW eTool* (Desmos)