1.
Which symbol makes the following statement true?
3.25 × 10
3
______ 325
A.
=
B.
>
C.
D.
<
Hint
2.
Express 0.0000421 in scientific notation.
A.
4.21 × 10
-5
B.
4.21 × 10
-9
C.
4.21 × 10
-4
D.
4.21 × 10
-6
Hint
3.
Use an exponent to write 177,147 as a power of 3.
A.
3
9
B.
3
11
C.
3
17
D.
3
19
Hint
4.
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.
never true
B.
always true
C.
sometimes true,
n
= 8
D.
sometimes true,
n
= 7
Hint
5.
Which number is not equal to the other three?
A.
B.
2
-2
C.
D.
Hint