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    Increasing Functions

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    Which of the functions below is increasing for all x-values?

    f(x) = x - 7

    f(x) = x2 - 7

    f(x) = x3 - 7

    f(x) = x4 - 7

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    https://brainmass.com/math/computing-values-of-functions/increasing-functions-93288

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