Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 2x + 6y + 1 = 0 
A. (h, k) = (-1, 3); r = 3
B. (h, k) = (1, -3); r = 3
C. (h, k) = (1, 3); r = 3
D. (h, k) = (-1, -3); r = 3
Answer: D
Mathematics
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