1.	If and , find the approximate value of log2 15.
		A.	3.9069	B.	0.7369
		C.	1.4649	D.	3.6802
		Hint
	2.	Solve log4 3 + log4 x = log4 18.
		A.	12	B.	6
		C.	15	D.	54
		Hint
	3.	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.	0.0013	B.	794.33
		C.	0.00068	D.	0.00032
		Hint
	4.	Given that log 8 10 1.11 and log 8 60 1.97, find log 8 6.
		A.	1.16	B.	3.08
		C.	1.77	D.	0.86
		Hint
	5.	Solve the equation 2 log 6 x – log 6 5 = log 6 125.
		A.	312.5	B.	–25
		C.	no solution	D.	25
		Hint