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
x
(3
y
)
C.
3(
xy
) + 5(
x
+ 3
y
)
D.
3(
x
+
y
) + 5(3
xy
)
Hint
3.
Evaluate 2 × 17 × 5.
A.
170
B.
160
C.
180
D.
190
Hint
4.
Simplify 7(
b
+ 3) + 14.
A.
42
b
B.
24
b
C.
7
b
+ 35
D.
7
b
+ 17
Hint
5.
Evaluate 0.75 + 2.2 + 0.25 + 0.8.
A.
6
B.
5
C.
4
D.
3
Hint