Find the domain of the function.f(x) = 
A. 
, or 
? 
B. 
, or (-?, -4) ? 
? 
C. 
, or 
? 
? (4, ?)
D. {x| x ? 4}, or (-?, 4) ? (4, ?)
Answer: C
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A. 20 B. 40 C. 64 D. 400
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