1.
Express 45,280,000 in scientific notation.
A.
4.528 × 10
-7
B.
45.28 × 10
6
C.
4.528 × 10
7
D.
4.528 × 10
6
Hint
2.
Simplify
A.
k
-3
B.
k
17
C.
D.
k
3
Hint
3.
Simplify (-3
a
5
b
3
)
4
.
A.
-12
a
20
b
12
B.
-81
a
9
b
12
C.
81
a
20
b
12
D.
-12
a
9
b
7
Hint
4.
Simplify
A.
B.
5
t
3
u
3
v
4
C.
D.
Hint
5.
Express the result in scientific notation.
A.
1.25 × 10
-10
B.
1.25 × 10
-4
C.
1.25 × 10
10
D.
1.25 × 10
4
Hint