1.
Simplify 6
a
+ 15
a
.
A.
42
a
B.
21
a
2
C.
6
a
+ 15
a
D.
21
a
Hint
2.
Simplify 3
x
2
y
+ 2
x
y
2
+ 5
x
2
y
+ 3
y
2
.
A.
13
x
5
y
6
B.
8
x
4
y
2
+5
y
3
C.
8
x
2
y
+ 2
x
y
2
+ 3
y
2
D.
8
x
2
y
+ 5
xy
2
Hint
3.
Evaluate
z
– (2
yz
+
y
) ·
y
if
y
= -3 and
z
= 2.
A.
23
B.
-43
C.
9
D.
47
Hint
4.
The formula for the perimeter of a rectangle is
, where
is the length of the rectangle and
w
is the width. If a rectangle is 17 ft long and 8 ft wide, what is its perimeter?
A.
50 ft
B.
42 ft
C.
25 ft
D.
68 ft
Hint
5.
Evaluate
p
· (
p
+ 3
q
) –
r
if
p
= -7,
q
= 4, and
r
= -16.
A.
45
B.
-19
C.
77
D.
-51
Hint