Find the center and radius of the circle.x2 + y2 - 2x + 10y - 55 = 0
A. center: (-5, 1); radius: 9
B. center: (1, -5); radius: 9
C. center: (-1, 5); radius: 81
D. center: (5, -1); radius: 81
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
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Let 
. Find the value of the function.
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Fill in the blank(s) with the appropriate word(s).
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