1.	Write the standard form of the equation of the circle that is tangent to the y-axis and has its center at (5, –3).
		A.	(x + 5)2 + (y – 3)2 = 25
		B.	(x + 5)2 + (y – 3)2 = 5
		C.	(x – 5)2 + (y + 3)2 = 5
		D.	(x – 5)2 + (y + 3)2 = 25
		Hint
	2.	The equation of a circle is 3x2 + 3y2 – 6x + 12y – 24 = 0. Write the standard form of the equation.
		A.	(x – 1)2 + (y – 2)2 = 13
		B.
		C.
		D.	(x – 1)2 + (y + 2)2 = 13
		Hint
	3.	Write the equation of the circle whose diameter has endpoints at (3, –1) and (–9, 5).
		A.	(x – 3)2 + (y + 2)2 = 13
		B.	(x + 3)2 + (y – 2)2 = 45
		C.	(x – 3)2 + (y + 2)2 = 45
		D.	(x + 3)2 + (y – 2)2 = 13
		Hint
	4.	Write the equation of a circle that has a diameter with endpoints at (1, 0) and (5, 4).
		A.	(x + 3) 2 + (y + 2) 2 = 8
		B.	(x - 3) 2 + (y - 2) 2 = 64
		C.	(x + 3) 2 + (y - 2) 2 = 64
		D.	(x - 3) 2 + (y - 2) 2 = 8
		Hint
	5.	The equation of a circle is (x - 8) 2 + (y + 3)2 = 48, find the center and the radius.
		A.	(-8, 3);	B.	(-8, -3);
		C.	(8, -3);	D.	(8, 3);
		Hint