1.	Simplify Assume the denominator is not equal to zero.
		A.		B.
		C.		D.
		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.	0.475 × 10-3
		C.	475 × 10-6	D.	4.75 × 10-4
		Hint
	5.	Express 2.38 × 106 in standard notation.
		A.	0.00000238	B.	2,380,000
		C.	0.000000238	D.	238,000
		Hint