1.
Simplify 3 + 2(
xy
+ 3
z
) + 4
xy
.
A.
9
xy
+ 15
z
B.
6
xy
+ 3
z
+ 3
C.
5
xy
+ 3
z
+ 3
D.
6
xy
+ 6
z
+ 3
Hint
2.
Write an algebraic expression for the verbal expression: three times the sum of
x
and
y
increased by five times the product of
x
and 3
y
.
A.
3
x
+
y
+ 5
x
(3
y
)
B.
3(
x
+
y
) + 5(3
xy
)
C.
3(
xy
) + 5(
x
+ 3
y
)
D.
3(
x
+
y
) + 5(
x
+ 3
y
)
Hint
3.
Simplify the expression 8 (
a
+ 2
b
) – 7
b
+ 6 (3
a
–
b
).
A.
4
a
– 6
b
B.
152
a
– 88
b
C.
26
a
– 6
b
D.
26
a
+ 3
b
Hint
4.
Simplify -5(6
a
- 9
b
) - 2(
a
-
b
).
A.
-32
a
+ 47
b
B.
-30
a
- 45
b
C.
-32
a
- 47
b
D.
32
a
- 47
b
Hint
5.
Simplify -5(2
x
+
y
) - 4(3
x
-
y
).
A.
2
x
- 9
y
B.
-22
x
-
y
C.
-22
x
- 9
y
D.
-2
x
-
y
Hint