1.	Express 7-3 using positive exponents.
		A.	(-7)3	B.
		C.		D.
		Hint
	2.	Write using negative exponents.
		A.	2-4	B.	2-3
		C.	-24	D.	-2-4
		Hint
	3.	Evaluate the expression 5n4m-2 if m = 6 and n = 3.
		A.		B.	-5
		C.	-20	D.
		Hint
	4.	The diameter of a volcanic particle averaged 0.000022 meter. What is this measure written in scientific notation?
		A.	0.22 × 10-4
		B.	2.2 × 10
		C.	2.2 × 105
		D.	2.2 × 10-5
		Hint
	5.	Evaluate the expression.–2-4
		A.		B.
		C.	–16	D.
		Hint