# Four Fours

Algebra Level 3

If $$f^{(9)}(\frac {2x-1}{4})$$ = $$\frac{2x-37}{4}$$ , find $$4[f^{(4)}(4)]^4$$ .

Note: The notation $$f^{(n)}(x)$$ means that $$f(x)$$ is iterated, or repeatedly carried out, $$n$$ times. For example, $$f^{(3)}(x)$$ means $$f(f(f(x)))$$ .

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