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Real-World Linear Function – Cell Phone Data Plan

Algebra · Algebra1 · Big Ideas Math · Ron Larson · - Graphing Linear Functions · Chapter 3-

Course: Algebra Book: Algebra1 · Big Ideas Math · Ron Larson · - Graphing Linear Functions Chapter: Chapter 3-

Question

A cell phone plan charges a flat monthly fee of $15 plus $0.08 per text message sent. (a) Write a linear function $C(t) = 0.08t + 15$, where $t$ is the number of text messages sent and $C$ is the monthly cost in dollars. (b) Create a table of values for $t = 0, 25, 50, 75, 100$. (c) Graph the function and label the axes and title. (d) Use the graph to estimate how many text messages are sent if the monthly bill is $\$23$. (e) Verify your estimate algebraically.

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This DoAssignment.ca lesson explains the problem with a narrated, step-by-step solution for students studying Algebra from Algebra1 · Big Ideas Math · Ron Larson · - Graphing Linear Functions.

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