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