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Austin purchased a prepaid phone card for $45.75. Calls cost 25 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=45.75-0.25x
How much credit is left on the card after Austin uses it for 30 minutes of calls?

User Bartando
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1 Answer

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Answer:

x=-4C+183

here is your answer.

User Mellet
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