The equation for a circle is
(x-h)² + (y-k)² = r²
h = your given x
y = your given k
Let's plug everything in!
(x - 5) ² + (y - (-1)) ² = 12²
Your final equation is
(x - 5) ² + (y + 1) ² = 144
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A because it is a pattern 4 6 4 8 and that is why it is a
0.54 = fiftyfour hundredths = 54/100 <span />