anonymous
  • anonymous
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 $17.63 and the monthly cost for 77 minutes is $20.87 . What is the monthly cost for 58 minutes of calls?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
50 minutes ------> $17.63 58 minutes--------> $ X use cross multiply.. 50*$x=58*$17.63 $x=(58*$17.63)/50 ... continoue
anonymous
  • anonymous
x=20.4508 so for 58 minutes of call will cost $20.4508
anonymous
  • anonymous
its wrong, look at this solution http://www.algebra.com/algebra/homework/Graphs/Graphs.faq.question.174364.html

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