Determine two functions, designated by y1 and y2, such that their union will give the graph of the given equation.(y + 2)2 + x2 = 16
A. y1 = -2 + 
and y2 = -2 - 
B. y1 = -2 + (16 - x2)2 and y2 = -2 - (16 - x2)2
C. y1 = -2 + 
and y2 = -2 - 
D. y1 = -2 + 
and y2 = -2 - 
Answer: A
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