Math

You have a wireless phone plan that costs $25 per month. You must also pay $.10 per minute for each minute over 500 min. you phone bill was more than $30 last month. Write an inequality to represent the number of minutes m you spent on the phone last month. Suppose you use 525 min next month. How much will your bill be?

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  1. The equation for your cost:

    cost = .1(m-500) + 25 , where m is in minutes

    so :
    .1(m-500) + 25 > 30

    For the second part, m = 525
    cost = .1(525-500) + 25
    = $27.50

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    posted by Reiny
  2. Thanks so much for this equation it really helped me!!!!!!

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