1.
Simplify (-3
a
5
b
3
)
4
.
A.
-81
a
9
b
12
B.
-12
a
20
b
12
C.
81
a
20
b
12
D.
-12
a
9
b
7
Hint
2.
Simplify the expression 8 (
a
+ 2
b
) – 7
b
+ 6 (3
a
–
b
).
A.
26
a
+ 3
b
B.
4
a
– 6
b
C.
152
a
– 88
b
D.
26
a
– 6
b
Hint
3.
Simplify
A.
B.
C.
D.
27
x
3
n
y
6
Hint
4.
If
a
= 3 and
b
= 4, what is
A.
468
B.
246
C.
432
D.
540
Hint
5.
If
a
= –3 and
b
= 3, what is
A.
36
B.
–27
C.
27
D.
–81
Hint