SOLUTION: 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
55 minutes of calls is $17.32 and th
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Question 1061687: 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
55 minutes of calls is $17.32 and the monthly cost for 89 minutes is 20.38 What is the monthly cost for 65 minutes of calls?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x for time and y for cost
Points (x,y)
format system as ;
Ready to eliminate b using Elimination Method to find value for m.
-
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USE THE FORMULA .
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