1.	Find .
		A.	-15	B.	15
		C.	-14	D.	14
		Hint
	2.	Find a number that when squared equals 484.
		A.	None of these is correct	B.	22 or -22
		C.	-22 only	D.	22 only
		Hint
	3.	Solve the equation x2 = 0.81.
		A.	x = 0.9 or x = -0.9
		B.	x = 0.9 only
		C.	none of these is correct
		D.	x = -0.9 only
		Hint
	4.	Determine whether the number is rational or irrational.
		A.	both	B.	irrational
		C.	neither	D.	rational
		Hint
	5.	Simplify .
		A.		B.
		C.		D.
		Hint