lolitschris13
lolitschris13 lolitschris13
  • 15-12-2022
  • Mathematics
contestada

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 51 minutes of calls is
$15.29 and the monthly cost for 97 minutes is $20.81. What is the monthly cost for 81 minutes of calls?

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