1.
Simplify 2(
x
+ 10).
A.
20
x
B.
12
x
C.
2
x
+ 20
D.
2
x
+ 10
Hint
2.
Simplify 14(
b
– 10).
A.
b
– 140
B.
14
b
– 140
C.
14
b
– 10
D.
4
b
Hint
3.
Write 10 · 10 · 10 in exponential form.
A.
10
3
B.
1
3
C.
3
10
D.
3
1
Hint
4.
Identify the like terms in the expression 13 +
x
+ 4 +
y
.
A.
no like terms
B.
13, 4
C.
x
,
y
D.
x
, 4
Hint
5.
Identify the like terms in the expression 7
a
+
b
+ 7 - 15
b
.
A.
7
a
, 7
B.
b
, -15
b
C.
no like terms
D.
b
,
c
Hint
6.
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
+ 11
s
) + (3
t
+ 2
t
)
D.
(4
s
+ 3
t
+ 11
s
+ 2
t
)
Hint
7.
Rewrite (5
y
-
z
) + (6
y
+ 12
z
) using parentheses so that the like terms are grouped together.
A.
(5
y
-
z
) + (6
y
+ 12
z
)
B.
(5
y
+ 6
y
) + (-
z
+ 12
z
)
C.
There are no like terms.
D.
(5
y
+ 12
z
) + (-
z
+ 6
y
)
Hint
8.
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
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.
8 - 2
b
B.
2
b
+ 8
C.
(-8) + 2
b
D.
2
b
+ (-8)
Hint