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laiz [17]
3 years ago
15

The cost of a long-distance telephone call is given by the function below, where m is the length of the call in minutes.

Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0

answer

45 minutes

explanation

using the equation C(m) = 0.1m + 1, C(m) is the cost of the phone call (5.50)

5.50 = 0.1m + 1 subtract 1 from both sides

4.5 = 0.1m divide both sides by 0.1

45 = m

m is the number of minutes, so 45 minutes

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