1.
If
y
varies inversely as
x
and
y
= 15 when
x
= 3, find
y
when
x
= 9.
A.
5
B.
3
C.
15
D.
45
Hint
2.
Simplify
.
A.
5
x
B.
C.
D.
2
x
Hint
3.
Simplify
.
A.
B.
C.
D.
Hint
4.
Find
.
A.
B.
2
C.
D.
Hint
5.
What is the quotient when
is divided by
?
A.
B.
C.
D.
Hint
6.
Express
in simplest form.
A.
B.
C.
D.
Hint
7.
A.
B.
C.
D.
Hint
8.
Solve
.
A.
-2
B.
-2 or 7
C.
-2 or
D.
5
Hint
9.
If
x
varies inversely as
y
and the constant of variation is 24, what are
x
and
y
if it is true that
x
+
y
= 11?
A.
3 and 8
B.
–6 and –4
C.
6 and 4
D.
–3 and –8
Hint
10.
Find
.
A.
B.
C.
D.
Hint
11.
Find
.
A.
B.
C.
D.
Hint
12.
Find
.
A.
k
2
+ 2
k
+ 1
B.
k
2
+ 2
k
+ 1 –
C.
k
+ 2
D.
k
2
– 2
k
– 7 –
Hint
13.
A builder wants the kitchen to have an area of
x
2
– 2
x
– 24, and a length of
x
+ 4. What is the width?
A.
x
+ 6
B.
x
– 6
C.
– 6
D.
6
Hint
14.
Find
.
A.
B.
C.
D.
Hint
15.
Find the LCM of
x
2
+ 7
x
+ 12 and
x
2
– 5
x
+ 4.
A.
(
x
– 1)(
x
+ 3) (
x
+ 4)
B.
(
x
– 1)(
x
– 4) (
x
+ 4)
C.
(
x
– 1)(
x
– 4)(
x
+ 3) (
x
+ 4)
D.
(
x
– 1)(
x
– 4)(
x
+ 3)
Hint
16.
Find
.
A.
B.
–3
C.
D.
Hint
17.
Cynthia has earned 81 total points on quizzes, and she has averaged a
on them. How many quizzes has she taken?
A.
7
B.
5
C.
3
D.
6
Hint
18.
Solve
.
A.
9 only
B.
0 only
C.
{0, 9}
D.
–9 only
Hint