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zepelin
3 months ago
6

Chris has a cell phone plan with a flat fee of $26.00 per month, plus a cost of $0.12 per minute of usage. Chris can only afford

a monthly bill of $86.00. Which statement is true? A. Chris needs to use fewer than 400 minutes per month. B. Chris needs to use fewer than 450 minutes per month. C. Chris can afford to use up to 500 minutes per month. D. Chris can afford to use up to 550 minutes per month.
Mathematics
1 answer:
tester [12.3K]3 months ago
3 0

For Chris, the calculation for his monthly telephone expense is as follows:

C (x) = 26 + 0.12x

Where "x" denotes each minute used.

Given that Chris can afford a bill of $86, we have:

26 + 0.12x \leq86\\0.12x \leq86-26\\0.12x \leq60\\x \leq \frac {60} {0.12}\\x \leq500

The total minutes of usage must not exceed 500 per month. Consequently, the viable choice is option C.

Answer:

Option C

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