1.
Simplify 6
a
+ 15
a
.
A.
21
a
B.
21
a
2
C.
42
a
D.
6
a
+ 15
a
Hint
2.
Simplify 3
x
2
y
+ 2
x
y
2
+ 5
x
2
y
+ 3
y
2
.
A.
8
x
2
y
+ 2
x
y
2
+ 3
y
2
B.
13
x
5
y
6
C.
8
x
2
y
+ 5
xy
2
D.
8
x
4
y
2
+5
y
3
Hint
3.
Simplify 12
y
+ 8
y
.
A.
simplified
B.
20
y
2
C.
4
y
D.
20
y
Hint
4.
Simplify 3
x
2
+ 11
x
+ 2
x
2
.
A.
6
x
2
+ 11
x
B.
5
x
2
+ 11
x
C.
16
x
2
D.
simplified
Hint
5.
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.
42 ft
B.
25 ft
C.
50 ft
D.
68 ft
Hint
, 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?