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Write a piecewise function describing the following scenario: A cellular phone plan charges $60 per month for the first 450 minutes, and charges $0.35

Write a piecewise function describing the following scenario: A cellular phone plan charges $60 per month for the first 450 minutes, and charges $0.35 per minute for any additional time over 450 minutes. Let the monthly cost C(x) be a function of the time x.

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