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Back to 3.2 Domain and Range

Working with a Piecewise Function

Avg difficulty 2.5

A cell phone company uses the function below to determine the cost, C, C , in dollars for g g gigabytes of data transfer.

C(g)={ 25 if 0<g<2 25+10(g−2) if g≥2 C \left(g\right) = \left\{\right. \begin{matrix}25 & \text{if} & 0 < g < 2 \\ 25 + 10 \left(g - 2\right) & \text{if} & g \geq 2\end{matrix}

Find the cost of using 1.5 gigabytes of data and the cost of using 4 gigabytes of data.

OpenStax Algebra and Trigonometry 2e, 3.2 Domain and Range, exercise 30

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.