# how to answer math world problems

Anonymous

Question description

Ashley purchased a prepaid phone card for \$50.00. Calls cost 20 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.

=Cx−50.000.20x

How much credit is left on the card after Ashley uses it for 20 minutes of calls?

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