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    NationalHardAlgebra7–9

    If f(x) = 2x - 1, what is f(f(3))?

    Se f(x) = 2x - 1, qual é f(f(3))?

    Answer options

    Solution

    f(3) = 2(3) - 1 = 5. f(f(3)) = f(5) = 2(5) - 1 = 9