1.
Simplify (4
x
3
) (3
x
5
).
A.
7
x
15
B.
12
x
8
C.
7
x
8
D.
12
x
15
Hint
2.
Simplify (7
a
4
b
) (8
a
7
b
6
).
A.
15
a
11
b
7
B.
56
a
28
b
6
C.
15
a
28
b
6
D.
56
a
11
b
7
Hint
3.
Simplify (3
a
4
b
5
c
)
4
.
A.
7
a
16
b
20
c
4
B.
3
a
16
b
20
c
4
C.
81
a
16
b
20
c
4
D.
12
a
8
b
9
c
5
Hint
4.
Simplify ((2
2
)
3
)
4
.
A.
2
24
=16,777,216
B.
2
9
= 512
C.
2
12
= 4096
D.
2
20
= 1,048,576
Hint
5.
Which expression is equivalent to ((3
2
)
4
)
3
?
A.
9
9
B.
9
6
C.
27
12
D.
81
6
Hint