Concept explainers
Reminder Round all answers to two decimal places unless otherwise indicated.
9. Cell Phone Charges Again One cell phone plan charges a flat monthly rate of
a. Choose letters to represent the variables.
b. Write a formula to express the cell phone charges as a function of the number of minutes used (assume that the number is at least
c. What are your cell phone charges if you use
d. Write the formula to express the cell phone charges, this assuming that the minutes are at least
e. What are your cell phone charges if you use
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Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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