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Question 1090005: Suppose the monthly cost of long distance phone plan in dollars is a linear function of the total calling time in minutes when graphed ,the function gives a line with a slope of 0.11 the monthly cost for 49 minutes of calls is 17.67 what is the monthly cost for 44 minutes of calls
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52780)   (Show Source):
You can put this solution on YOUR website! .
Suppose the monthly cost of long distance phone plan in dollars is a linear function of the total calling time
in minutes when graphed, the function gives a line with a slope of 0.11 the monthly cost for 49 minutes of calls is 17.67
what is the monthly cost for 44 minutes of calls
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If to read and understand the condition literally as it is written, then it is self-contradictory and incorrect.
Indeed,  . is not 17.67 dollars.
I understand that there is "a hidden part of the condition" related to the fixed monthly fee.
But in formulation of a Math problem/problems should not be "hidden conditions". Math problems are not puzzles.
Therefore, in my view, such a formulation does not have a right to exist.
The other tutors may have different opinions.
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Also, use the dots in the text where they should be.
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
Suppose the monthly cost of long distance phone plan in dollars is a linear function of the total calling time in minutes when graphed ,the function gives a line with a slope of 0.11 the monthly cost for 49 minutes of calls is 17.67 what is the monthly cost for 44 minutes of calls
Fixed cost = 12.28, so 44 minutes cost: 
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