1.
Which number is
not
a factor of 315?
A.
3
B.
9
C.
5
D.
2
Hint
2.
Are 12 and 25 relatively prime? Explain.
A.
No; 12 and 25 are not prime numbers.
B.
Yes; 12 is even and 25 is odd.
C.
No; 12 has three prime factors.
D.
Yes; 12 and 25 have no common factors.
Hint
3.
Find
a
7
·
a
4
A.
a
3
B.
(2
a
)
3
C.
(2
a
)
11
D.
a
11
Hint
4.
Simplify 11
z
2
× 9
z
3
.
A.
20
z
6
B.
20
z
5
C.
99
z
5
D.
99
z
6
Hint
5.
Rewrite
r
a
÷
r
b
using a single base.
A.
r
ab
B.
r
a
C.
r
a-b
D.
r
b
Hint
6.
Rewrite
I
z
÷
j
z
using a single base.
A.
(
i – j
)
z
B.
C.
D.
Hint