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Math Help - Box problem

  1. #1
    Junior Member
    Joined
    Dec 2008
    Posts
    30

    Box problem

    So my sister is looking for help on a math problem and turned to me. Unfortunately I havn't done this stuff in years. Can anyone give me a refresher so I know how to explain and answer this problem for her?

    Here is what she gave me:

    A boxed shaped storage container with the square base and no top is to have a capacity of 38 cubic ft. The material for the bottom of the container costs 59 cents per square foot, while material for the sides costs 43 cents per square foot. You want to find the length, width, height of the container that costs the least amount.
    Find the equation for the function f giving the cost as a function of a variable x. Indicate what x represents.


    If you can solve it for me cool, but I can probably get it easily enough if I knew what topic to google for the refresher.
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  2. #2
    MHF Contributor
    Joined
    Nov 2008
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    France
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    1,458
    Hi

    You will find something very similar here to refresh your memory !

    http://www.mathhelpforum.com/math-he...tml#post236633
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  3. #3
    Junior Member
    Joined
    Dec 2008
    Posts
    30
    That helps tremendously and I passed it straight on to her.

    Thanks!
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