1.
Find log 47.2 to four decimal places.
A.
2.0791
B.
0.6739
C.
3.8544
D.
1.6739
Hint
2.
Find
to three decimal places.
A.
2.3225
B.
1.3617
C.
3.1355
D.
1.6113
Hint
3.
Solve 3
2
x
-1
= 25.6 to three decimal places.
A.
1.976
B.
0.739
C.
4.767
D.
1.204
Hint
4.
Solve 6
2x
> 5
x
+ 2
.
A.
x
> 1.82
B.
x
> 1.63
C.
x
> 0.82
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.
2 times
B.
5 times
C.
100 times
D.
100,000 times
Hint