11. What is the center and radius of the circle with equation (X - 5)2 + (y + 3)2 = 16?
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center (5, -3); radius = 16
center (5, -3); radius = 4
center (-5, 3); radius = 16
The equation of a circle is (x – h)^2 + (y – k)^2 = r^2, and the center is the opposite inside the parenthesis, so its +5 and -3. And radius is r^2 = 16 or r = 4
