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Math Help - Demand Equation

  1. #1
    QED
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    Demand Equation

    Is this a book error? Can't figure it out...


    "Consider the demand equation:

    p = -.02x + 400 (0< x < 20,000) (greater than or equal to)

    Solving the demand equation for x in terms of p we find:

    x = f(p) = -50p + 20,000

    I can't figure out how the second is derived from the first. Some guidance would be appreciated.
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  2. #2
    MHF Contributor
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    Quote Originally Posted by QED View Post
    p = -.02x + 400
    Multiply through by 50; kapish?
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  3. #3
    QED
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    Got it... Just a way to make it clean. Thanks!
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