1.	Find + + .
		A.		B.	1
		C.		D.
		Hint
	2.	Find .
		A.		B.
		C.		D.
		Hint
	3.	Suppose you bought two storage blocks for your bedroom. One is inches high. The other is inches high You want to stack them and fit them under the window, which is 21 inches from the floor. Will they fit?
		A.	They will not fit at all.	B.	They will fit exactly.
		C.	None is correct.	D.	They will fit but not exactly.
		Hint
	4.	Evaluate a - b if a = and b = .
		A.		B.	-1
		C.	1	D.
		Hint
	5.	Solve r = +.
		A.	r = -1	B.	r = 1
		C.	r =	D.	r =
		Hint