If f(x) = 7x – 9 and g(x) (a) f(g(x)) Preview (b) g(f(x)) = Preview (c) Thus g(x) is called an function of f(x)

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A: What is pi?

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A: f(x) = 2x2 + 6x - 7 and g(x) = 2x -7

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