The graph of a quadratic function is given. Choose the function's equation.
A. f(x) = x2 + 3
B. f(x) = x2 - 6x + 9
C. f(x) = x2 - 3
D. f(x) = x2 + 6x + 9
Answer: D
Mathematics
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? 
A. 4
B. 2
C. 
D. 
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