1.
Which symbol makes the following statement true?
3.25 × 10
3
______ 325
A.
B.
=
C.
>
D.
<
Hint
2.
Simplify (3
a
4
b
5
c
)
4
.
A.
81
a
16
b
20
c
4
B.
12
a
8
b
9
c
5
C.
3
a
16
b
20
c
4
D.
7
a
16
b
20
c
4
Hint
3.
Evaluate (3.2 × 10
-5
)(5.4 × 10
9
). Express the result in scientific notation.
A.
1.728 × 10
3
B.
17.28 × 10
4
C.
1.728 × 10
5
D.
0.1728 × 10
6
Hint
4.
Evaluate
. Express the result in scientific notation.
A.
0.8 × 10
-8
B.
80 × 10
-8
C.
8.0 × 10
-7
D.
8.0 × 10
-9
Hint
5.
Tell whether the statement is
sometimes true, always true
, or
never true
for positive values of
n
. If it is sometimes true, state for what value it is true.
4
n
= 6,561.
A.
always true
B.
never true
C.
sometimes true,
n
= 8
D.
sometimes true,
n
= 7
Hint