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Elementary Algebra

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I need help setting this problem up? AT&T one rate 10cents nation wide direct plan for $2.99 a month plus 10cents per minute.
Quest 5cent long distance plan for $4.99 per month plus 5cents per minute. For what number of minutes per month will the two plans cost the same?

  • Elementary Algebra -

    for m minutes,

    AT&T: 2.99 + .10m
    Quest: 4.99 + .05m

    when are they equal? That would be when they are equal:

    2.99 + .10m = 4.99 + .05m
    m = 40

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