1.
Express 0.091 in scientific notation.
A.
9.1 × 10
-2
B.
9.1 × 10
1
C.
9.1 × 10
-1
D.
9.1 × 10
2
Hint
2.
What is the degree of 42
x
5
y
2
z
?
A.
8
B.
5
C.
2
D.
7
Hint
3.
Simplify (18
q
3
r
)(2
q
r
4
).
A.
36
q
r
B.
36
q
3
r
4
C.
36
q
4
r
5
D.
36
q
3
r
5
Hint
4.
Simplify (-3
a
5
b
3
)
4
.
A.
-12
a
9
b
7
B.
81
a
20
b
12
C.
-12
a
20
b
12
D.
-81
a
9
b
12
Hint
5.
Express the result in scientific notation.
A.
1.25 × 10
-10
B.
1.25 × 10
4
C.
1.25 × 10
-4
D.
1.25 × 10
10
Hint