1.	Simplify x3y0z-2.
		A.	-x3yz2	B.
		C.		D.	0
		Hint
	2.	Simplify . Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		Hint
	3.	Simplify Assume the denominator is not equal to zero.
		A.	5xy2	B.
		C.	5xy8	D.	1
		Hint
	4.	Express 2.38 × 106 in standard notation.
		A.	0.000000238	B.	2,380,000
		C.	238,000	D.	0.00000238
		Hint
	5.	Express 0.000033 in scientific notation.
		A.	3.3 × 10-6	B.	3.3 × 105
		C.	3.3 × 10-4	D.	3.3 × 10-5
		Hint