1.	Express 7-3 using positive exponents.
		A.		B.
		C.		D.	(-7)3
		Hint
	2.	Write a2b-3 using positive exponents.
		A.		B.
		C.		D.
		Hint
	3.	Write using negative exponents.
		A.	-2-4	B.	2-3
		C.	2-4	D.	-24
		Hint
	4.	Evaluate the expression 5n4m-2 if m = 6 and n = 3.
		A.		B.	-20
		C.	-5	D.
		Hint
	5.	Write as an expression using a negative exponent.
		A.		B.	2-6
		C.	-26	D.
		Hint