1.	Find an equation of the circle whose center is at (-2, 4) and has radius 5.
		A.	(x + 2)2 + (y - 4)2 = 5
		B.	(x - 2)2 + (y + 4)2 = 25
		C.	(x + 2)2 + (y - 4)2 = 25
		D.	(x - 2)2 + (y + 4)2 = 5
		Hint
	2.	Find the coordinates of the center of a circle with equation x2 + y2 - 2x + 8y + 13 = 0.
		A.	(1, -4)	B.	(-1, -4)
		C.	(-1, 4)	D.	(1, 4)
		Hint
	3.	Find the radius of a circle with the equation x2 + y2 + 6x - 10y + 28 = 0.
		A.	6	B.	3
		C.		D.	5
		Hint
	4.	What is an equation for a circle if the endpoints of a diameter are at (3, 4) and (-3, -2)?
		A.		B.
		C.		D.
		Hint
	5.	What is an equation for a circle with a center at (3, -1) that is tangent to the line x = 7?
		A.		B.
		C.		D.
		Hint