1.	Evaluate (3.2 × 10-5)(5.4 × 109). Express the result in scientific notation.
		A.	17.28 × 104	B.	0.1728 × 106
		C.	1.728 × 103	D.	1.728 × 105
		Hint
	2.	Evaluate . Express the result in scientific notation.
		A.	8.0 × 10-9	B.	80 × 10-8
		C.	0.8 × 10-8	D.	8.0 × 10-7
		Hint
	3.	Find .
		A.	15	B.	-15
		C.	-14	D.	14
		Hint
	4.	The population of fish in Mark's lake is 500 this year. If the population increases by 6.9% a year, what number can Mark multiply this year's population by to estimate the fish population in the lake next year?
		A.	0.0931	B.	6.9
		C.	1.069	D.	1.69
		Hint
	5.	Which equation represents exponential growth?
		A.	y = 250 × 0.25x	B.	y = 250 × 0.4c
		C.	y = 250 × 4x	D.	y = 250 · x
		Hint
	6.	Evaluate.
		A.	–3	B.	3
		C.	–2	D.	2
		Hint