Find the vertex and axis of symmetry of the graph of the function.f(x) = x2 + 6x + 8
A. (-3, -1); x = -3
B. (3, -1); x = 3
C. (-3, 1); x = -3
D. (3, 1); x = 3
Answer: A
Mathematics
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A. x > -3
B. x < -3
C. x < -4
D. x > - 
Mathematics