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