1.	Find the domain of the function.y = –x + 3
		A.	all real numbers except 3	B.	all real numbers
		C.	all real numbers except –3	D.	all real numbers except 1
		Hint
	2.	Hector needs to build a rectangular pen for his dog. He decides to use an area of 50 m2 in his backyard for the pen. Using l for the length and w for the width, express the area in terms of the two variables.
		A.	l + w = 50	B.	lw = 50
		C.	w = 50 – w	D.
		Hint
	3.	Find the x-intercepts of the graph of f(x) = x2 – 2x – 3.
		A.	1, –4	B.	1, –3
		C.	–1, 3	D.	–1, 4
		Hint
	4.	Approximate the solution to x3 – 4x – 1 = x + 4.
		A.	x = 0	B.	x = 2.6
		C.	x = 1.3	D.	x = 5.2
		Hint