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Mathematics, 28.05.2020 05:57 awesomegrill

Nicole purchased a prepaid phone card for $45.75. Calls cost 10 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.
C = 45.75 -0.10%
How much credit is left on the card after Nicole uses it for 15 minutes of calls?

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