1.
Simplify 2(
x
+ 10).
A.
12
x
B.
2
x
+ 10
C.
2
x
+ 20
D.
20
x
Hint
2.
Simplify –11(
t
+ 1).
A.
11
t
+ 11
B.
-11
t
+ 1
C.
-11
t
– 11
D.
11
t
+ 1
Hint
3.
Simplify 14(
b
– 10).
A.
14
b
– 140
B.
14
b
– 10
C.
b
– 140
D.
4
b
Hint
4.
Simplify –20(
z
– 5).
A.
20
z
– 5
B.
-20
z
– 5
C.
-20
z
+ 100
D.
20
z
+ 100
Hint
5.
Serefina has a part-time job that pays $6.75 an hour. During spring vacation, she worked two hours on Monday, five hours on Tuesday, and four hours on Thursday. How much money did Serefina earn over spring vacation?
A.
$74.25
B.
$67.50
C.
$81.00
D.
$60.75
Hint