1.
Simplify
Assume the denominator is not equal to zero.
A.
B.
C.
D.
Hint
2.
Evaluate
. Express the result in scientific notation.
A.
8.0 × 10
-9
B.
8.0 × 10
-7
C.
80 × 10
-8
D.
0.8 × 10
-8
Hint
3.
Use an exponent to write 177,147 as a power of 3.
A.
3
17
B.
3
11
C.
3
9
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.
always true
B.
sometimes true,
n
= 7
C.
sometimes true,
n
= 8
D.
never true
Hint
5.
Which number is not equal to the other three?
A.
B.
C.
2
-2
D.
Hint