1.
What is the greatest common factor of 18
mn
2
, 54
m
4
, and 80
n
3
?
A.
2
mn
2
B.
9
mn
C.
2
D.
18
m
2
n
3
Hint
2.
Find the GCF of 3
x
2
y
2
and 15
xy
.
A.
3
x
y
2
B.
3
x
2
y
C.
3
x
2
y
2
D.
3
xy
Hint
3.
Find the GCF of 16
a
3
b
2
and 12
a
2
b
.
A.
4
ab
B.
2
a
2
b
C.
2
ab
D.
4
a
2
b
Hint
4.
Find the GCF of 17
r
4
s
4
and 23
r
s
4
.
A.
17
r
s
4
B.
r
4
s
4
C.
r
s
4
D.
rs
Hint
5.
The area of a rectangle can be written by the expression 24
x
4
+ 18
x
3
. Find a set of possible dimensions for this rectangle.
A.
2
x
4
by 12 + 9
x
B.
3 by 8
x
3
+ 6
x
3
C.
24
x
3
by
x
+ 18
D.
6
x
3
by 4
x
+ 3
Hint