Ask Question
8 September, 10:42

Mary purchased a prepaid phone card for $30.00. 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.

C = 30.00 - 0.20x

How much credit is left on the card after Mary uses it for 50 minutes of calls?

+2
Answers (1)
  1. 8 September, 10:45
    0
    Answer: $40 is left on the card after Mary uses it for 50 minutes of calls.

    Step-by-step explanation:

    Let x represent the number of minutes of calls made

    The credit, C (in dollars), left on the card after it is used for x

    minutes of calls is given by the expression,

    C = 30.00 - 0.20x

    After Mary used the credit for 50 minutes of calls, the amount of credit that would be left on the card is

    C = 30.00 - 0.20 * 50

    C = 30 + 10

    C = $40
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Mary purchased a prepaid phone card for $30.00. Calls cost 20 cents a minute using this card. The credit, C (in dollars), left on the card ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers