Let $f(x) = 3\sqrt{2x - 7} - 8$.  Find $f(8)$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $f(x) = 3\sqrt{2x - 7} - 8$.  Find $f(8)$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
1
Let $f(x) = 3\sqrt{2x - 7} - 8$.  Find $f(8)$.
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