1.
Which statement illustrates the associative property of multiplication?
A.
(2
x
)
y
= 2(
xy
)
B.
(2
x
)
y
=
y
(2
x
)
C.
(2
x
)
y
= (
x
· 2)
y
D.
(2
x
)
y
= 2
xy
Hint
2.
Simplify 3 + 2(
xy
+ 3
z
) + 4
xy
.
A.
6
xy
+ 3
z
+ 3
B.
6
xy
+ 6
z
+ 3
C.
5
xy
+ 3
z
+ 3
D.
9
xy
+ 15
z
Hint
3.
Evaluate 2 × 17 × 5.
A.
170
B.
190
C.
160
D.
180
Hint
4.
Simplify 7(
b
+ 3) + 14.
A.
42
b
B.
7
b
+ 17
C.
7
b
+ 35
D.
24
b
Hint
5.
Write a simplified expression to represent 5 times the sum of
x
and 3 increased by 10.
A.
5
x
+ 13
B.
18
x
C.
35
x
D.
5
x
+ 25
Hint