1.	Solve the equation x2 = 0.81.
		A.	x = 0.9 only
		B.	x = 0.9 or x = -0.9
		C.	x = -0.9 only
		D.	none of these is correct
		Hint
	2.	Determine whether the number is rational or irrational.
		A.	irrational	B.	rational
		C.	neither	D.	both
		Hint
	3.	Simplify .
		A.		B.
		C.		D.
		Hint
	4.	Evaluate.
		A.	5	B.	8
		C.	–6	D.	6
		Hint
	5.	Evaluate.
		A.	2	B.	–2
		C.	3	D.	–3
		Hint