Math
posted by Betsy on .
A phone call costs $0.58 for the first 3 minutes and $0.15 for each additional minute. If the total charge for the call was $4.78, how many minutes was the call?

4.78 = .58 + .15(m3)
m = 31 
1.64 minutes

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31

28

A phone call costs $0.58 for the first 3 minutes and $0.15
for each additional minute. If the total charge for the call
was $4.78, how many minutes was the call? 
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