Mathalicious: Family Plan

How much should you pay for a shared wireless plan?

When family members share a wireless plan, how should they split the bill? What if someone goes over the maximum allotted messages, voice minutes, or megabytes of data? And when should they change to a different plan?

In this lesson, students use proportional reasoning to predict whether a family will exceed their wireless plan allotment. They write and evaluate numerical expressions to decide how to split the bill fairly, and explain whether it makes sense to upgrade their plan.


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Math Topics
Algebra & Pre-Algebra, Ratios, Rates & Percents
Middle School
7th Grade

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