1.	If and , find the approximate value of log2 15.
		A.	3.9069	B.	0.7369
		C.	3.6802	D.	1.4649
		Hint
	2.	Solve log4 3 + log4 x = log4 18.
		A.	6	B.	12
		C.	15	D.	54
		Hint
	3.	Solve log5 ( x + 2) + log5 ( 2x - 1) = 2.
		A.	no solution	B.	, 3
		C.		D.	3
		Hint
	4.	Chemistry The pH of a solution and the concentration [H+] of hydrogen ions in the solution are related by the formula . Find the concentration of hydrogen ions in a solution with a pH of 2.9.
		A.	794.33	B.	0.00032
		C.	0.00068	D.	0.0013
		Hint
	5.	Given that log 8 10 1.11 and log 8 60 1.97, find log 8 6.
		A.	1.16	B.	1.77
		C.	3.08	D.	0.86
		Hint