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Math Help - I have a problem with this SAT question

  1. #1
    Senior Member Paze's Avatar
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    I have a problem with this SAT question

    So I'm playing around with SAT questions and I stumble upon this.

    After about an hour of trying I can't seem to get it right:

    Question: http://s3.postimage.org/wel17i1cj/bugproblem.png

    So I read the explanation which infuriated me (or perhaps made me feel very stupid, we'll see).

    Am I right when I say that they are asking you to solve for s(10)? They then go on to say that s=100 which is all fine and dandy but then the function would read: 100(10)= right? Which makes no sense.
    It's like saying: '' f(x)=3x, where f is the number of units sold and x is the price'', which makes no sense what so ever since f denotes a function (same as s in their example).

    I'm really confused and a little sleep deprived so bear with me...
    Last edited by Paze; February 14th 2013 at 10:24 PM.
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  2. #2
    Senior Member jakncoke's Avatar
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    Re: I have a problem with this SAT question

    They ask you to solve for s(20) and by s = 100, they mean s(p)=100 since s is a function not a variable , so they say when p = 10, s=100 or s(10)=100
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  3. #3
    Senior Member Paze's Avatar
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    Re: I have a problem with this SAT question

    I really feel like they should state: ''S(P) is the number of units sold''. I've never heard it referred to like that. ''S is the number...''..
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