1.
Simplify (4
x
3
) (3
x
5
).
A.
7
x
8
B.
7
x
15
C.
12
x
15
D.
12
x
8
Hint
2.
Simplify (7
a
4
b
) (8
a
7
b
6
).
A.
15
a
28
b
6
B.
56
a
11
b
7
C.
56
a
28
b
6
D.
15
a
11
b
7
Hint
3.
Simplify (3
a
4
b
5
c
)
4
.
A.
12
a
8
b
9
c
5
B.
7
a
16
b
20
c
4
C.
3
a
16
b
20
c
4
D.
81
a
16
b
20
c
4
Hint
4.
Simplify (4
x
2
y
) (2
x
y
2
z
3
)
3
.
A.
32
x
6
y
6
z
9
B.
24
x
5
y
7
z
9
C.
32
x
5
y
7
z
9
D.
8
x
5
y
7
z
9
Hint
5.
Find the volume of the rectangular solid shown below.
A.
24
a
2
b
10
B.
24
a
4
b
8
C.
24
a
2
b
7
D.
9
a
4
b
8
Hint