1.
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
2.
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
3.
Simplify (3
a
4
b
2
)
2
(2
a
3
bc
2
)
3
.
A.
17
a
12
b
8
c
5
B.
36
a
17
b
7
c
6
C.
72
a
17
b
7
c
6
D.
6
a
17
b
7
c
6
Hint
4.
Simplify ((2
2
)
3
)
4
.
A.
2
24
=16,777,216
B.
2
12
= 4096
C.
2
9
= 512
D.
2
20
= 1,048,576
Hint
5.
Suppose that the base of a triangle is 3
x
y
and its height is also 3
x
y
. What is its area, expressed as a monomial?
A.
x
4
B.
6
x
2
y
2
C.
D.
Hint