1.
Express 7
-3
using positive exponents.
A.
(-7)
3
B.
C.
D.
Hint
2.
Evaluate the expression 5
n
4
m
-2
if
m
= 6 and
n
= 3.
A.
B.
-20
C.
-5
D.
Hint
3.
Write 0.478 in scientific notation.
A.
4.78 × 10
2
B.
4.78 × 10
-2
C.
478 × 10
1
D.
4.78 × 10
-1
Hint
4.
The diameter of a volcanic particle averaged 0.000022 meter. What is this measure written in scientific notation?
A.
0.22 × 10
-4
B.
2.2 × 10
5
C.
2.2 × 10
-5
D.
2.2 × 10
Hint
5.
Simplify (3
x
3
)
4
.
A.
12
x
12
B.
3
x
7
C.
81
x
12
D.
27
x
7
Hint