1.
Which statement illustrates the associative property of multiplication?
A.
(2
x
)
y
= (
x
· 2)
y
B.
(2
x
)
y
= 2(
xy
)
C.
(2
x
)
y
= 2
xy
D.
(2
x
)
y
=
y
(2
x
)
Hint
2.
Simplify 3 + 2(
xy
+ 3
z
) + 4
xy
.
A.
6
xy
+ 3
z
+ 3
B.
5
xy
+ 3
z
+ 3
C.
9
xy
+ 15
z
D.
6
xy
+ 6
z
+ 3
Hint
3.
Simplify 12
f
+ 6(3 + 4
f
).
A.
16
f
+ 18
B.
34
f
C.
54
f
D.
36
f
+ 18
Hint
4.
Evaluate 2 × 17 × 5.
A.
170
B.
160
C.
190
D.
180
Hint
5.
Simplify 7(
b
+ 3) + 14.
A.
42
b
B.
7
b
+ 35
C.
7
b
+ 17
D.
24
b
Hint