SOLUTION: Danny, who is 1 year old, is playing with the telephone when he accidentlly presses one of the buttons his mother has programmed to dial her friend Sue's number. Sue answers the ph

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Question 949911: Danny, who is 1 year old, is playing with the telephone when he accidentlly presses one of the buttons his mother has programmed to dial her friend Sue's number. Sue answers the phone and realizes Danny is on the other end. She talks to Danny, trying to get him to hang up. The cost for a call is $0.23 for the first minute and $0.14 fro every minute after that. If the total charge for the call is $3.73, how long did it take Sue to convince Danny to hang up the phone?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
t=time of call in minutes
Total=$0.23+$0.14(t-1) Subtract $0.23 from each side.
Total-$0.23=$0.14(t-1) Divide each side by $0.14
(Total-$0.23)/$0.14=t-1
($3.73-$0.23)/$0.14=t-1
$3.50/$0.14=t-1
25=t-1 Add 1 to each side.
26=t ANSWER: The time of the call was 26 minutes.