1.
Simplify 2(
x
+ 10).
A.
2
x
+ 20
B.
2
x
+ 10
C.
20
x
D.
12
x
Hint
2.
Simplify –11(
t
+ 1).
A.
11
t
+ 11
B.
-11
t
+ 1
C.
-11
t
– 11
D.
11
t
+ 1
Hint
3.
Simplify 14(
b
– 10).
A.
14
b
– 140
B.
4
b
C.
14
b
– 10
D.
b
– 140
Hint
4.
Simplify –20(
z
– 5).
A.
20
z
– 5
B.
20
z
+ 100
C.
-20
z
– 5
D.
-20
z
+ 100
Hint
5.
Write 7 · 7 · 7 · 7 · 7 in exponential form.
A.
5
5
B.
5
7
C.
7
5
D.
7
7
Hint
6.
Identify the like terms in the expression 13 +
x
+ 4 +
y
.
A.
no like terms
B.
x
,
y
C.
x
, 4
D.
13, 4
Hint
7.
Identify the like terms in the expression 7
a
+
b
+ 7 - 15
b
.
A.
no like terms
B.
b
, -15
b
C.
b
,
c
D.
7
a
, 7
Hint
8.
Rewrite 4 - 7
a
as an addition expression by using the additive inverse.
A.
4 + 7
a
B.
7
a
- 4
C.
4 + (-7
a
)
D.
(-7
a
) + 4
Hint
9.
Rewrite 9
q
- 5
r
as an addition expression by using the additive inverse.
A.
9
q
+ (-5
r
)
B.
5
r
- 9
q
C.
(-5
r
) + 9
q
D.
9
q
+ 5
r
Hint
10.
Rewrite 2
b
- 8 as an addition expression by using the additive inverse.
A.
2
b
+ (-8)
B.
2
b
+ 8
C.
(-8) + 2
b
D.
8 - 2
b
Hint