1.
Simplify 3(2
a
+
b
) + 6(
a
- 2
b
).
A.
12
a
+
b
B.
12
a
+ 15
b
C.
12
a
- 9
b
D.
12
a
+ 9
b
Hint
2.
Use the distributive property to rewrite 3(5 +
y
) without parentheses.
A.
8 + 3
y
B.
15 + 3
y
C.
15 +
y
D.
8 +
y
Hint
3.
Use the distributive property to rewrite
without parentheses.
A.
B.
24
x
- 3
C.
24
x
- 4
D.
24
x
- 24
Hint
4.
Evaluate
, if
b
= 42.
A.
B.
9
C.
-9
D.
6
Hint
5.
Evaluate
a
(4 +
b
), if
a
= 4 and
b
= -12.
A.
4
B.
-16
C.
-32
D.
12
Hint