What is the domain of f(x)=9−x2?
A. f(x)≥9f of x is greater than or equal to 9
B. all real numbers
C. −3≤x≤3−3≤x≤3
D. x≤9
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Answer:
-3≥3≤3≥3≥3≥3≥3≥3≥3≥3≥3
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