Question 1161175
Patrick goes away to college. The first week he is away he calls his girlfriend using his
parents’ telephone credit card. The phone company charges 40 cents for the first
minute and 30 cents for each additional minute and then adds on a 50-cent service
charge for using the card. If his parents receive a bill for $13.80 for Patrick’s call, how
long did he talk? 
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m = minutes
40 cents for the 1st minute + 30 cents for each additional minute ---> 30m + 10
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1380 = 50 + 30m+10
30m = 1320
m = 44 minutes