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 = 5
		C.	(x + 2)2 + (y - 4)2 = 25
		D.	(x - 2)2 + (y + 4)2 = 25
		Hint
	2.	Find an equation of a circle if the endpoints of a diameter are at (-2, -3) and (1, 7).
		A.	(x - 1)2 + (y - 7)2 = 109
		B.	(x + 2)2 + (y + 3)2 = 109
		C.
		D.
		Hint
	3.	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
	4.	What is equidistant to all of the points on a circle?
		A.	center	B.	tangent line
		C.	radius	D.	diameter
		Hint
	5.	Which of the following could be the center of a circle that is tangent to the lines y = 3 and x = –2?
		A.	(2, 1)	B.	(2, -1)
		C.	(-3, 1)	D.	(0, 0)
		Hint