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Mathematics, 10.03.2020 00:26 warrior4516

For each long-distance call anywhere in the continental United States, a new phone service will charge users $0.60 per minute for the first 2 minutes and $0.02 per minute for additional minutes in each call. Tom’s current phone service charges $0.10 per minute for all calls, and his calls are never shorter than 7 minutes.
If Tom’s dorm switches to the new phone service, what will happen to the average length of his calls?

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