1.
Solve log
3
(
x
+ 4) - log
3
(
x
- 2) = 2 log
3
2.
A.
6
B.
9
C.
4
D.
8
Hint
2.
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.
0.0013
C.
0.00032
D.
794.33
Hint
3.
Given that log
8
10
1.11 and log
8
60
1.97, find log
8
6.
A.
1.77
B.
1.16
C.
3.08
D.
0.86
Hint
4.
Use log
3
4
1.26 to approximate the value of log
3
108.
A.
2.38
B.
36
C.
3.78
D.
4.26
Hint
5.
Use the fact that log
5
8
1.29 and log
5
10
1.43 to approximate the value of log
5
80.
A.
1.84
B.
2.72
C.
16
D.
1.11
Hint