1.	Simplify
		A.		B.	315
		C.		D.	15
		Hint
	2.	Solve 2x+4 = 22x+5.
		A.	-3	B.	-1
		C.	-2	D.	-4
		Hint
	3.	Solve 52n+3 < 25.
		A.		B.	n < -1
		C.		D.	n > 1
		Hint
	4.	Which of the following represents exponential decay?
		A.		B.
		C.		D.
		Hint
	5.	The number of bacteria in a culture grew exponentially. When the experiment began, there were 100,000. Ten minutes later, that number grew to 220,000. Which of the following equations could be used to model this situation?
		A.		B.
		C.		D.
		Hint