What is the domain of f(x)? What is its range?f(x) = 
+ 9
A. Domain: (-?, 8) ? (8, ?); range: (-?, 9) ? (9, ?)
B. Domain: (-?, 0) ? (0, ?); range: (-?, -9) ? (-9, ?)
C. Domain: (-?, 0) ? (0, ?); range: (-?, 9) ? (9, ?)
D. Domain: (-?, 9) ? (9, ?); range: (-?, 0) ? (0, ?)
Answer: C
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