1.	Simplify
		A.	15	B.
		C.	315	D.
		Hint
	2.	Simplify
		A.		B.	x4
		C.		D.	x2
		Hint
	3.	Solve 2x+4 = 22x+5.
		A.	-1	B.	-4
		C.	-2	D.	-3
		Hint
	4.	Which of the following represents exponential decay?
		A.		B.
		C.		D.
		Hint
	5.	Suppose that the wealth of a business owner is increasing exponentially. In 1993, he had $40 million. In 2001, he had $55 million. How much money will he have in 2010?
		A.	$78.7 million	B.	$28.0 million
		C.	$20.3 million	D.	$57.2 million
		Hint