1.
What is the greatest common factor of 45, 75, and 135?
A.
25
B.
9
C.
5
D.
15
Hint
2.
Find the greatest common factor of 64
ab
3
c
2
and 48
a
2
b
2
c
.
A.
16
abc
B.
8
a
2
b
2
c
2
C.
8
ab
3
c
D.
16
ab
2
c
Hint
3.
Find the GCF of 3
x
2
y
2
and 15
xy
.
A.
3
xy
B.
3
x
2
y
2
C.
3
x
2
y
D.
3
x
y
2
Hint
4.
Factor 7
x
+ 21.
A.
7(
x
+ 21)
B.
7
x
(1 + 21)
C.
7(
x
+ 3)
D.
x
(7 + 21)
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