1.
Find the sum (–5
x
+ 6) + (–2
x
– 7).
A.
7
x
+ 13
B.
–7
x
+ 1
C.
–7
x
+ 13
D.
–7
x
– 1
Hint
2.
Find the sum.
A.
-3
b
3
- 3
b
+ 1
B.
-3
b
3
- 3
b
C.
-3
b
3
+
b
2
- 3
b
D.
-3
b
3
-
b
2
- 3
b
Hint
3.
Find the difference (4 - 7
a
2
) - (-
a
+ 2
a
2
- 1).
A.
-9
a
2
+
a
+ 5
B.
-5
a
2
+
a
+ 5
C.
-9
a
2
+
a
+ 3
D.
-5
a
2
-
a
+ 3
Hint
4.
Rewriting the expression (
y
+ 5) – (4
y
+ 1) as (1 – 4)
y
+ (5 – 1) shows of grouping the like terms and the use of the _______.
A.
Commutative Property of Multiplication
B.
Addition Property of Equality
C.
Distributive Property
D.
Associative Property of Addition
Hint
5.
Find the sum of the areas of the rectangles.
A.
(12
d
2
+ 14
d
+ 12) cm
2
B.
(35
d
2
+ 14
d
+ 36) cm
2
C.
(36
d
2
+ 48
d
+ 35) cm
2
D.
(24
d
+ 14
d
+ 12) cm
2
Hint