1.	Simplify .
		A.	-2a4c2	B.	-2c2
		C.	-2a4b4c2	D.
		Hint
	2.	A tiny virus has a width of 10-6 millimeter. How many of the tiny viruses could fit across the head of a pin 1 millimeter in diameter?
		A.	16	B.	10-6
		C.	106	D.	-61
		Hint
	3.	Write 4-8 using positive exponents.
		A.		B.	48
		C.	84	D.
		Hint
	4.	Simplify the expression g4h-8j2.
		A.		B.
		C.		D.
		Hint
	5.	Simplify the expression
		A.		B.
		C.		D.
		Hint