1.	Choose the statement that is true.
		A.	Zero cannot be the numerator of a fraction because zero cannot be divided by any number.
		B.	Zero cannot be the denominator of a fraction because division by zero is undefined.
		C.	0 ÷ 0 = 1
		D.	0 ÷ 0 = 0
		Hint
	2.	Find the excluded value(s) for the rational expression .
		A.	0	B.	0 and -5
		C.	-5 and 5	D.	-5
		Hint
	3.	Find the excluded value(s) for the rational expression .
		A.	0	B.	-1
		C.	-1, 4	D.	-4, 4
		Hint
	4.	Simplify the rational expression .
		A.		B.
		C.		D.
		Hint
	5.	Simplify .
		A.		B.
		C.		D.
		Hint