Question regarding graphing word problem

Reference no: EM13123044

A montly cost of a long distance phone plan in dollars is a linear function of the total calling time in minutes. When graphed the funtion gives a line with a slope of 0.13. The monthly cost for 42 mintues of calls is $14.62. What is the monthly cost for 33 minutes of calls.

Reference no: EM13123044

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