ellanorlemus583 ellanorlemus583
  • 26-02-2024
  • Mathematics
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Heather purchased a prepaid phone card for $25.25. 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=25.25-0.25x
How much credit is left on the card after Heather uses it for 30 minutes of calls?

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