<PRE><B>Question 1063193</B>
slope = (y(2) - y(1)) / (x(2) - x(1))
:
0.09 = (12.76 - (y(1)) / (47 - 44)
:
12.76 - y(1) = 0.27
:
-y(1) = -12.49 
:
y(1) = 12.49
:
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The monthly cost of 44 minutes is $12.49
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: 
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