1.
Which statement illustrates the associative property of multiplication?
A.
(2
x
)
y
=
y
(2
x
)
B.
(2
x
)
y
= 2
xy
C.
(2
x
)
y
= 2(
xy
)
D.
(2
x
)
y
= (
x
· 2)
y
Hint
2.
Simplify 3 + 2(
xy
+ 3
z
) + 4
xy
.
A.
6
xy
+ 6
z
+ 3
B.
6
xy
+ 3
z
+ 3
C.
5
xy
+ 3
z
+ 3
D.
9
xy
+ 15
z
Hint
3.
Write an algebraic expression for the verbal expression: three times the sum of
x
and
y
increased by five times the product of
x
and 3
y
.
A.
3(
x
+
y
) + 5(
x
+ 3
y
)
B.
3(
x
+
y
) + 5(3
xy
)
C.
3
x
+
y
+ 5
x
(3
y
)
D.
3(
xy
) + 5(
x
+ 3
y
)
Hint
4.
Simplify 12
f
+ 6(3 + 4
f
).
A.
34
f
B.
16
f
+ 18
C.
54
f
D.
36
f
+ 18
Hint
5.
Write a simplified expression to represent 5 times the sum of
x
and 3 increased by 10.
A.
5
x
+ 25
B.
5
x
+ 13
C.
18
x
D.
35
x
Hint