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March 29, 2017

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43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10-cents for each minute thereafter.What is the cost, in cents, of a 10-minute phone call?

a. 200-20c
b.100c+70
c. 30+7c
d.100-7c
e. 100-70c

please answer and explain

  • math - typo? - ,

    Please proofread your problem.

  • math - ,

    10 cents per minute for the first 3 minutes + 30 cents, but I don't know what is 10-cents for each minute thereafter?

  • math - ,

    type mistake:

    10 cents per minute for the first 3 minutes = 30 cents

  • math - ,

    43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10-c cents for each minute thereafter.What is the cost, in cents, of a 10-minute phone call?

  • math - ,

    10 - 3 = 7

    This problem doesn't make sense as the charge per minute is the same -- whether it's the first three minutes or the rest of the phone call.

  • math - ,

    10 cents per minute for the first 3 minutes = 30 cents ,but I don't know what is 10-c cents for each minute thereafter?

  • math - ,

    why -3 , because the first 3 minutes ?

  • math - ,

    Yes.

  • math - ,

    is it answer c. 30 + 7c?

  • math - ,

    What does c represent?

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