1.
Simplify (4
x
3
) (3
x
5
).
A.
12
x
15
B.
7
x
8
C.
12
x
8
D.
7
x
15
Hint
2.
Simplify (7
a
4
b
) (8
a
7
b
6
).
A.
56
a
11
b
7
B.
56
a
28
b
6
C.
15
a
11
b
7
D.
15
a
28
b
6
Hint
3.
Simplify (3
a
4
b
2
)
2
(2
a
3
bc
2
)
3
.
A.
72
a
17
b
7
c
6
B.
6
a
17
b
7
c
6
C.
36
a
17
b
7
c
6
D.
17
a
12
b
8
c
5
Hint
4.
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.
B.
x
4
C.
6
x
2
y
2
D.
Hint
5.
Which expression is equivalent to ((3
2
)
4
)
3
?
A.
81
6
B.
9
9
C.
27
12
D.
9
6
Hint