1.	Simplify x3y0z-2.
		A.		B.	-x3yz2
		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.		B.
		C.		D.
		Hint
	4.	Express 47.5 × 10-5 in scientific notation.
		A.	4.75 × 10-6	B.	475 × 10-6
		C.	4.75 × 10-4	D.	0.475 × 10-3
		Hint
	5.	Express 0.034 × 107 in scientific notation.
		A.	3.4 × 109	B.	3.4 × 105
		C.	0.34 × 106	D.	34 × 104
		Hint