1.
Simplify (3
a
4
b
5
c
)
4
.
A.
3
a
16
b
20
c
4
B.
12
a
8
b
9
c
5
C.
81
a
16
b
20
c
4
D.
7
a
16
b
20
c
4
Hint
2.
Simplify
Assume the denominator is not equal to zero.
A.
B.
C.
D.
Hint
3.
Evaluate (3.2 × 10
-5
)(5.4 × 10
9
). Express the result in scientific notation.
A.
1.728 × 10
5
B.
17.28 × 10
4
C.
1.728 × 10
3
D.
0.1728 × 10
6
Hint
4.
Use an exponent to write 177,147 as a power of 3.
A.
3
17
B.
3
19
C.
3
11
D.
3
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.
never true
B.
sometimes true,
n
= 8
C.
always true
D.
sometimes true,
n
= 7
Hint