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July 30, 2014

July 30, 2014

Posted by **Austin** on Monday, September 28, 2009 at 10:12pm.

The charges for a telephone call are $0.45 for the first 3 minutes and $0.09 for each additional minute or part of a minute. Represent the cost of a telephone call that lasts "m" minutes, when "m" is greater than 3.

- Algebra -
**drwls**, Monday, September 28, 2009 at 10:50pm0.45 + 0.09 (m-3)= 0.09x + 0.18

It also works if m=3

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