1.	Write a2b-3 using positive exponents.
		A.		B.
		C.		D.
		Hint
	2.	Evaluate the expression 5n4m-2 if m = 6 and n = 3.
		A.		B.	-5
		C.		D.	-20
		Hint
	3.	Write the expression 5-4 using a positive exponent.
		A.	54	B.
		C.		D.	-54
		Hint
	4.	Write as an expression using a negative exponent.
		A.		B.	-26
		C.	2-6	D.
		Hint
	5.	Evaluate x-4 if x = 3.
		A.	-81	B.	81
		C.		D.
		Hint