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Mathematics, 25.07.2019 20:30 hotsaucerman567
The monthly cost (in dollars) of a long-distance phone plan is a linear function of the total calling time (in minutes). the monthly cost for 50 minutes of calls is $13.98 and the monthly cost for 78 minutes is $17.06 . what is the monthly cost for 77 minutes of calls?
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The monthly cost (in dollars) of a long-distance phone plan is a linear function of the total callin...
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