1.
Which is
not
a like term in the expression 7
x
+ 3 - 4
x
-
x
?
A.
3
B.
-4
x
C.
7
x
D.
-
x
Hint
2.
Simplify 5
a
+ 3
a
.
A.
15
a
2
B.
8
a
C.
8
a
2
D.
15
a
Hint
3.
Simplify 12
p
+ 15 - 13 - 12
p
A.
28
B.
p
+ 2
C.
2
D.
p
- 28
Hint
4.
Simplify -5 + 3
d
+ 6 - 4
d
.
A.
d
B.
d
- 1
C.
1 -
d
D.
-
d
Hint
5.
At a nature store, you buy three pieces of hematite rock for
d
dollars, two pieces of tiger’s eye for $2.50 each, and a rose quartz for $3. Write an expression in simplest form that represents the total amount.
A.
3
d
+ 8
B.
d
+ 8
C.
3
d
+ 5.5
D.
3
d
+ 11
Hint