1.
Express 45,280,000 in scientific notation.
A.
45.28 × 10
6
B.
4.528 × 10
7
C.
4.528 × 10
-7
D.
4.528 × 10
6
Hint
2.
Express 0.091 in scientific notation.
A.
9.1 × 10
1
B.
9.1 × 10
-2
C.
9.1 × 10
2
D.
9.1 × 10
-1
Hint
3.
Simplify (18
q
3
r
)(2
q
r
4
).
A.
36
q
4
r
5
B.
36
q
3
r
5
C.
36
q
r
D.
36
q
3
r
4
Hint
4.
Simplify (-3
a
5
b
3
)
4
.
A.
-12
a
9
b
7
B.
-12
a
20
b
12
C.
-81
a
9
b
12
D.
81
a
20
b
12
Hint
5.
Simplify
A.
B.
27
x
3
n
y
6
C.
D.
Hint