SC READY Math Grade 8 Practice Questions - South Carolina SC READY Mathematics Assessment - Grade 8 Exam

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A mobile phone plan cost is modeled by C(t) = 0.10t + 25, where C is total monthly cost in dollars and t is number of text messages. What does the slope 0.10 represent?

The rate of change: cost per text message ($0.10/text) The initial monthly base fee ($0.10) The total bill when 25 texts are sent The maximum allowed text messages

Correct Answer:

The rate of change: cost per text message ($0.10/text)

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