1.
Find log 136.8 to four decimal places.
A.
2.0502
B.
2.1418
C.
2.1361
D.
2.1106
Hint
2.
Solve 4
x
= 22 to three decimal places.
A.
5.500
B.
3.414
C.
2.230
D.
3.961
Hint
3.
A.
±1.022
B.
1.022
C.
-2.266
D.
1.648
Hint
4.
Solve 6
2x
> 5
x
+ 2
.
A.
x
> 1.63
B.
x
> 0.82
C.
x
> 1.82
D.
x
> 0.85
Hint
5.
Suppose black coffee has a pH of 5 and milk of magnesia has a pH of 10. How many times more hydrogen ions are in black coffee than in milk of magnesia? (pH = –log[H+], where
H
+ is the substance's hydrogen ion concentration in moles per liter)
A.
5 times
B.
100 times
C.
2 times
D.
100,000 times
Hint