Asked by maddie
One phone company advertises a flat rate of .07 per minute for long distance calls your long distance plan charges five dollars per month plus a rate of .05 per minute how many minutes do you have to talk to each month so that your average cost is less than .07 per minute
Answers
Answered by
oobleck
5.00 + .05x < .07x
5.00 < .02x
250 < x
So, you need to use more than 250 minutes to make it cost less
5.00 < .02x
250 < x
So, you need to use more than 250 minutes to make it cost less
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