1.	If and , find the approximate value of log2 15.
		A.	0.7369	B.	1.4649
		C.	3.6802	D.	3.9069
		Hint
	2.	Solve log3 (x + 4) - log3 (x - 2) = 2 log3 2.
		A.	4	B.	6
		C.	8	D.	9
		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.	0.00068	B.	794.33
		C.	0.00032	D.	0.0013
		Hint
	4.	Use log 3 4 1.26 to approximate the value of log 3 108.
		A.	36	B.	3.78
		C.	4.26	D.	2.38
		Hint
	5.	Solve the equation 2 log 6 x – log 6 5 = log 6 125.
		A.	25	B.	–25
		C.	312.5	D.	no solution
		Hint