1.	Find
		A.		B.
		C.		D.
		Hint
	2.	Solve the equation x2 = 0.81.
		A.	x = 0.9 or x = -0.9
		B.	none of these is correct
		C.	x = 0.9 only
		D.	x = -0.9 only
		Hint
	3.	Solve x2 = 256.
		A.	x = 128	B.	x = 65,536
		C.	x = 64	D.	x = 16
		Hint
	4.	Find .
		A.	30	B.	-30
		C.	30 and -30	D.	90
		Hint
	5.	Find -.
		A.	-12.5	B.	-5
		C.	12.5	D.	5
		Hint