1.
State the excluded values of
x
in the expression
.
A.
B.
, 3, or 4
C.
or - 3
D.
or 3
Hint
2.
Simplify
.
A.
B.
C.
D.
Hint
3.
Find
.
A.
B.
C.
D.
Hint
4.
Find
.
A.
B.
C.
2
D.
Hint
5.
Find
.
A.
B.
C.
D.
Hint
6.
Express
in simplest form.
A.
B.
C.
-1
D.
1
Hint
7.
Find an expression for the perimeter of the rectangle.
A.
B.
C.
D.
Hint
8.
Find
.
A.
B.
C.
D.
Hint
9.
A.
B.
C.
D.
Hint
10.
Solve
.
A.
7
B.
-7 or 2
C.
-7
D.
7 or 2
Hint
11.
Which of the following is not an example of inverse variation?
A.
the number of computers a company gives if it has enough computers to give 24 people 1 computer, or 12 people two computers
B.
the number of running plays a football team can run if they elect to use 2 running backs for 8 plays each, or 1 running back for 16 plays
C.
the distance covered if several different people drive 200 miles to the game at variable speeds
D.
the number of samples a store can give away if they give 1 free sample to each of 300 people, or decide to give 2 samples to 300 people
Hint
12.
Which of the following is not true concerning inverse variation?
A.
As
y
increases,
x
decreases
B.
Its graph is defined for
x
= 0.
C.
x
1
y
1
=
x
2
y
2
D.
There is some nonzero constant
k
such that
x
y
=
k
Hint
13.
Find
.
A.
B.
C.
D.
Hint
14.
Find
.
A.
12
x
– 10
B.
48
x
3
– 40
x
2
C.
3
x
–
D.
3
x
– 2
Hint
15.
Find
.
A.
y
– 12
B.
y
+ 12
C.
y
– 9
D.
y
+ 9
Hint
16.
Find the LCM of
x
2
+ 7
x
+ 12 and
x
2
– 5
x
+ 4.
A.
(
x
– 1)(
x
– 4)(
x
+ 3) (
x
+ 4)
B.
(
x
– 1)(
x
– 4) (
x
+ 4)
C.
(
x
– 1)(
x
– 4)(
x
+ 3)
D.
(
x
– 1)(
x
+ 3) (
x
+ 4)
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.
6
D.
3
Hint
18.
Suppose one runner can run 8 laps in 12 minutes, and another runner can run 8 laps in 10 minutes. If they start at the same time, after how many laps by the fast runner will he lap the slow runner?
A.
after 5 laps
B.
after 6 laps
C.
after 8 laps
D.
after 7.5 laps
Hint