1.	Which of the following is a rational function?
		A.		B.
		C.		D.
		Hint
	2.	Which of the following types of functions may have a hole?
		A.	rational	B.	absolute value
		C.	quadratic	D.	square root
		Hint
	3.	Which of the following types of functions is always continuous on its domain?
		A.	inverse variation	B.	rational
		C.	greatest integer	D.	square root
		Hint
	4.	When will it be true that ?
		A.	never	B.	always
		C.	only when x is an integer	D.	only when x is not an integer
		Hint
	5.	What type of function is y = 2?
		A.	absolute value	B.	direct variation
		C.	constant	D.	rational
		Hint