SOLUTION: Megan's text messaging plan costs $14 for the first 350 messages and 25¢ for each additional text message. If she owes $72.50 for text messaging in the month of April, how many te
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Question 1111971: Megan's text messaging plan costs $14 for the first 350 messages and 25¢ for each additional text message. If she owes $72.50 for text messaging in the month of April, how many text messages did she send that month? Found 2 solutions by mananth, MathTherapy:Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! lET NUMBER OF TEXT MESSAGES SENT BE X
Fixed cost $14 -350 messages
variable $ 0.25 each message
Bill = 72.50
72.50 = 14 +0.25x
extra messages 234
find total
You can put this solution on YOUR website!
Megan's text messaging plan costs $14 for the first 350 messages and 25¢ for each additional text message. If she owes $72.50 for text messaging in the month of April, how many text messages did she send that month?
Let number of text messages sent be m, and amount owed, O
Then, O(m) = .25(m - 350) + 14, with
72.5 = .25m - 87.5 + 14 ------- Substituting 72.5 for O(m)
72.5 = .25m - 73.5
72.5 + 73.5 = .25m
146 = .25m
m, or number of messages sent that month =
