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Math Help - Linear Inequalities

  1. #1
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    Linear Inequalities

    Phone Company #1 charges $30 for a monthly plan and $0.02 for each additional minute. Phone Company #2 charges $25 and $0.04 for each additional minute.

    A) Set up an inequality that can be used to determine for what amount of time (in minutes) Phone Company #2 is the better plan.


    Any help will be much appreciated. Thanks.
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  2. #2
    Member
    Joined
    Dec 2009
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    180

    Help arrives =)

    Here is a clue =)
    Set:
    A = 30+0.02x
    B = 25+0.04x
    now solve for A<B =)
    And A=B to get the "breaking point".
    Regards Henry
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