The cost of a long-distance phone call is $0.45 for the first minute and $0.36 for each additional minute. if the
total charge for a long-distance call is $6.93, how many minutes was the call?
the call was for
minutes.

19 minutes

Step-by-step explanation:

cost = .45+.36m

If we take 6.93 minus .45 for the minute, we get 6.48. We take 6.48 and divide it by .36 for each additional minute, which is 18. We take the 18 and add one more minute to it since .45 was covered for the first minute.

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