1.
Simplify (4
x
3
) (3
x
5
).
A.
12
x
15
B.
12
x
8
C.
7
x
15
D.
7
x
8
Hint
2.
Simplify (7
a
4
b
) (8
a
7
b
6
).
A.
15
a
11
b
7
B.
15
a
28
b
6
C.
56
a
11
b
7
D.
56
a
28
b
6
Hint
3.
Simplify (4
y
4
)
3
.
A.
64
y
12
B.
64
y
64
C.
12
y
12
D.
12
y
3
Hint
4.
Simplify (4
x
2
y
) (2
x
y
2
z
3
)
3
.
A.
24
x
5
y
7
z
9
B.
8
x
5
y
7
z
9
C.
32
x
5
y
7
z
9
D.
32
x
6
y
6
z
9
Hint
5.
Which expression is equivalent to ((3
2
)
4
)
3
?
A.
81
6
B.
9
6
C.
27
12
D.
9
9
Hint