1.	Express 7-3 using positive exponents.
		A.	(-7)3	B.
		C.		D.
		Hint
	2.	Evaluate the expression 5n4m-2 if m = 6 and n = 3.
		A.	-5	B.
		C.	-20	D.
		Hint
	3.	How would 9.3 × 10-7 be written in standard form?
		A.	930,000,000
		B.	93,000,000
		C.	0.000000093
		D.	0.00000093
		Hint
	4.	Evaluate the expression.–2-4
		A.	–16	B.
		C.		D.
		Hint
	5.	Simplify the expression.–4x × 4x8
		A.	–16x8	B.	–16x9
		C.	–8x9	D.	–8x8
		Hint