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Math Help - Maximum sale

  1. #1
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    Maximum sale

    How much should be spent on advertising to maximize sales? What is the maximum sales level?

    S(x) = 200x + 1,500 / 0.02x^2 + 5

    critical point is 10 and -25

    For maximum sale of 500 units

    this is what I have I just dont know what to plug in for advertising cost
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  2. #2
    Senior Member Spec's Avatar
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    I assume that the sales are dependent on the advertising cost, x.

    The advertising cost can obviously not be negative, so that leaves you with one answer.
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