1.
What is the degree of 42
x
5
y
2
z
?
A.
7
B.
2
C.
8
D.
5
Hint
2.
Simplify
A.
B.
k
-3
C.
k
17
D.
k
3
Hint
3.
Simplify (-3
a
5
b
3
)
4
.
A.
-81
a
9
b
12
B.
-12
a
20
b
12
C.
-12
a
9
b
7
D.
81
a
20
b
12
Hint
4.
Simplify
A.
B.
5
t
3
u
3
v
4
C.
D.
Hint
5.
Express the result in scientific notation. (3 × 10
-3
)(2 × 10
9
)
A.
6 × 10
12
B.
3 × 10
6
C.
3 × 10
12
D.
6 × 10
6
Hint