1.
Simplify (18
q
3
r
)(2
q
r
4
).
A.
36
q
4
r
5
B.
36
q
r
C.
36
q
3
r
5
D.
36
q
3
r
4
Hint
2.
Simplify (-3
a
5
b
3
)
4
.
A.
-81
a
9
b
12
B.
81
a
20
b
12
C.
-12
a
20
b
12
D.
-12
a
9
b
7
Hint
3.
Simplify the expression 8 (
a
+ 2
b
) – 7
b
+ 6 (3
a
–
b
).
A.
152
a
– 88
b
B.
26
a
– 6
b
C.
4
a
– 6
b
D.
26
a
+ 3
b
Hint
4.
If
a
= –5 and
b
= 7, what is
A.
–174
B.
–76
C.
145
D.
–114
Hint
5.
If
a
= –3 and
b
= 3, what is
A.
27
B.
–81
C.
–27
D.
36
Hint