1.	Find the domain of the function.
		A.	all real numbers except 0
		B.	all real numbers except –1
		C.	all real numbers except 1
		D.	all real numbers
		Hint
	2.	Find the domain of the function.y = –x + 3
		A.	all real numbers except 3	B.	all real numbers except –3
		C.	all real numbers except 1	D.	all real numbers
		Hint
	3.	Find the range of a parabola if the vertex is (–5, 3) and the parabola opens upward.
		A.	range: f (x) –5
		B.	range: f (x) –5
		C.	range: f (x) 3
		D.	range: f(x) 3
		Hint
	4.	Find the line of symmetry of the graph of f(x) = x2 – 4x + 5.
		A.	x = 1	B.	x = –1
		C.	x = –2	D.	x = 2
		Hint