1.
Simplify 14(
b
– 10).
A.
14
b
– 140
B.
14
b
– 10
C.
4
b
D.
b
– 140
Hint
2.
Simplify –20(
z
– 5).
A.
-20
z
+ 100
B.
20
z
– 5
C.
20
z
+ 100
D.
-20
z
– 5
Hint
3.
Write 7 · 7 · 7 · 7 · 7 in exponential form.
A.
7
5
B.
5
7
C.
7
7
D.
5
5
Hint
4.
Write 10 · 10 · 10 in exponential form.
A.
3
10
B.
1
3
C.
10
3
D.
3
1
Hint
5.
Identify the like terms in the expression 2
n
+ 8 - 5
n
+ 2
m
.
A.
8, -5
n
B.
2
n
, -5
n
C.
2
n
, 2
m
D.
no like terms
Hint
6.
Identify the like terms in the expression 7
a
+
b
+ 7 - 15
b
.
A.
b
, -15
b
B.
7
a
, 7
C.
no like terms
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
+ 2
t
) + (3
t
+ 11
s
)
B.
There are no like terms.
C.
(4
s
+ 3
t
+ 11
s
+ 2
t
)
D.
(4
s
+ 11
s
) + (3
t
+ 2
t
)
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.
5
r
- 9
q
B.
9
q
+ (-5
r
)
C.
9
q
+ 5
r
D.
(-5
r
) + 9
q
Hint
10.
Write 2 · 2 · 9 · 2 · 9 using exponents.
A.
3
2
· 2
9
B.
8 · 9
2
C.
2
3
· 9
2
D.
2
3
· 9
3
Hint