1.
Simplify 2(
x
+ 10).
A.
2
x
+ 10
B.
12
x
C.
2
x
+ 20
D.
20
x
Hint
2.
Simplify –11(
t
+ 1).
A.
11
t
+ 1
B.
-11
t
+ 1
C.
-11
t
– 11
D.
11
t
+ 11
Hint
3.
Simplify 14(
b
– 10).
A.
14
b
– 10
B.
14
b
– 140
C.
4
b
D.
b
– 140
Hint
4.
Simplify –20(
z
– 5).
A.
-20
z
+ 100
B.
20
z
+ 100
C.
-20
z
– 5
D.
20
z
– 5
Hint
5.
Write 7 · 7 · 7 · 7 · 7 in exponential form.
A.
7
5
B.
7
7
C.
5
5
D.
5
7
Hint
6.
Write 10 · 10 · 10 in exponential form.
A.
10
3
B.
3
10
C.
1
3
D.
3
1
Hint
7.
Rewrite (4
s
+ 3
t
) + (11
s
+ 2
t
) using parentheses so that the like terms are grouped together.
A.
There are no like terms.
B.
(4
s
+ 2
t
) + (3
t
+ 11
s
)
C.
(4
s
+ 3
t
+ 11
s
+ 2
t
)
D.
(4
s
+ 11
s
) + (3
t
+ 2
t
)
Hint
8.
Rewrite (5
y
-
z
) + (6
y
+ 12
z
) using parentheses so that the like terms are grouped together.
A.
(5
y
+ 6
y
) + (-
z
+ 12
z
)
B.
(5
y
-
z
) + (6
y
+ 12
z
)
C.
There are no like terms.
D.
(5
y
+ 12
z
) + (-
z
+ 6
y
)
Hint
9.
Rewrite 4 - 7
a
as an addition expression by using the additive inverse.
A.
7
a
- 4
B.
(-7
a
) + 4
C.
4 + (-7
a
)
D.
4 + 7
a
Hint
10.
Rewrite 2
b
- 8 as an addition expression by using the additive inverse.
A.
2
b
+ (-8)
B.
8 - 2
b
C.
2
b
+ 8
D.
(-8) + 2
b
Hint