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