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
+ 11
C.
11
t
+ 1
D.
-11
t
– 11
Hint
3.
Write 10 · 10 · 10 in exponential form.
A.
3
1
B.
1
3
C.
3
10
D.
10
3
Hint
4.
Identify the like terms in the expression 2
n
+ 8 - 5
n
+ 2
m
.
A.
no like terms
B.
8, -5
n
C.
2
n
, -5
n
D.
2
n
, 2
m
Hint
5.
Identify the like terms in the expression 13 +
x
+ 4 +
y
.
A.
13, 4
B.
x
,
y
C.
no like terms
D.
x
, 4
Hint
6.
Identify the like terms in the expression 7
a
+
b
+ 7 - 15
b
.
A.
no like terms
B.
b
, -15
b
C.
7
a
, 7
D.
b
,
c
Hint
7.
Rewrite (4
s
+ 3
t
) + (11
s
+ 2
t
) using parentheses so that the like terms are grouped together.
A.
(4
s
+ 11
s
) + (3
t
+ 2
t
)
B.
(4
s
+ 3
t
+ 11
s
+ 2
t
)
C.
There are no like terms.
D.
(4
s
+ 2
t
) + (3
t
+ 11
s
)
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 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.
Write 2 · 2 · 9 · 2 · 9 using exponents.
A.
8 · 9
2
B.
3
2
· 2
9
C.
2
3
· 9
2
D.
2
3
· 9
3
Hint