Phillipians413 Phillipians413

19-05-2023
Mathematics

contestada

Carmen purchased a prepaid phone card for $30.00. Calls cost 15 cents a minute using this card. The credit, C (in dollars), left on the card after it is used for x
minutes of calls is given by the following function.
C(x)-30.00-0.15x
How much credit is left on the card after Carmen uses it for 50 minutes of calls?
dollars

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