1.	Which graph shows a parabola with exactly one root?
		A.		B.
		C.		D.	A parabola cannot have exactly one root.
		Hint
	2.	Find two numbers whose sum is 1 and whose product is –72.
		A.	–8 and –9	B.	–8 and –9 or 8 and 9
		C.	8 and –9	D.	–8 and 9
		Hint
	3.	The roots of the quadratic equation x2 – 6x – 16 are __________.
		A.	-2 and 8	B.	6 and 16
		C.	-6 and -16	D.	2 and –8
		Hint
	4.	Estimate the roots of 2x2 + 3x – 4.
		A.	between 0 and 1, between -3 and -2
		B.	between 0 and -1, between 2 and 3
		C.	between 2 and 3, between -4 and -3
		D.	between -3 and -2, between -4 and -3
		Hint
	5.	Find two numbers whose sum is 15 and whose product is 36.
		A.	5 and 10	B.	6 and 9
		C.	3 and 12	D.	4 and 8
		Hint