1.
Which number is
not
a prime number?
A.
31
B.
7
C.
11
D.
51
Hint
2.
Which number is
not
a composite number?
A.
27
B.
29
C.
63
D.
111
Hint
3.
Find the GCF of 36
a
2
b
and 81
ab
2
.
A.
3
a
2
b
B.
12
ab
C.
3
ab
D.
9
ab
Hint
4.
Factor the monomial 15
x
2
y
2
z
3
.
A.
3 · 5 ·
x
·
y
·
z
·
z
B.
3 · 5 ·
x
·
x
·
y
·
y
·
z
·
z
·
z
C.
15 ·
x
·
y
·
z
·
z
D.
15 ·
x
·
x
·
y
·
y
·
z
·
z
·
z
Hint
5.
Elaine needs to make a rectangular poster with an area of 30 square centimeters. She needs to use an e
x
pensive border around the perimeter of the poster. Assuming they are whole numbers, find the length and width so that the poster has the least perimeter.
A.
5 cm by 6 cm
B.
15 cm by 2 cm
C.
1 cm by 30 cm
D.
10 cm by 3 cm
Hint