1.
Simplify the expression 138
n
+ 272
n
.
A.
410
n
B.
400
n
C.
310
n
D.
500
n
Hint
2.
Simplify the expression
b
+ 14
b
.
A.
15
b
B.
14
b
C.
13
b
D.
14
b
2
Hint
3.
Simplify the expression 12
n
+ (-5
n
) + 3
n
.
A.
10
n
B.
7
n
C.
-4
n
D.
-20
n
Hint
4.
Simplify 2
n
+ 6(
n
– 7).
A.
15
n
B.
n
C.
8
n
– 42
D.
8
n
– 7
Hint
5.
Simplify 10
x
– 5 + 4
x
+ 2(
x
– 7).
A.
16
x
– 12
B.
16
x
– 19
C.
16
x
– 10
D.
16
x
– 2
Hint