1.
Suppose
p
varies jointly as
r
and
t
. If
p
= 1 when
r
= -5 and
t
= 2, find
t
when
p
= 6 and
r
= 12.
A.
-5.4
B.
-6.4
C.
-5
D.
-7.2
Hint
2.
Find
A.
x
- 2
B.
C.
x
2
- 5
x
+ 6
D.
Hint
3.
Simplify
.
A.
B.
C.
D.
Hint
4.
Solve
A.
-3 <
y
< 1
B.
y
< -3
C.
y
< -3 or 0 <
y
< 1
D.
-3 <
y
< 0 or
y
> 1
Hint
5.
Simplify
.
A.
B.
C.
D.
Hint
6.
Which of the following is the LCM of
.
A.
66
s
4
q
2
B.
66
s
4
t
2
q
2
C.
33
s
4
t
2
q
2
D.
33
s
4
q
2
Hint
7.
In a certain job, the function
represents the amount of hours worked
x
in relation to the amount of stress
f
(
x
) felt by the workers. For what values of
x
does this graph have meaning?
A.
for
B.
for
and
x
> 40, because stress is a non-negative quantity
C.
for
and
x
< 40
D.
for all values of
x
Hint
8.
Which of the following functions has a hole
and
a vertical asymptote?
A.
B.
C.
D.
Hint
9.
Suppose
x
varies directly with
y
. If
y
increases by a factor of 2, what will happen to
x
?
A.
It will increase by a factor of 4.
B.
It will decrease by a factor of 4.
C.
It will decrease by a factor of 2.
D.
It will increase by a factor of 2.
Hint
10.
Which type of function looks like a direct variation function when
x
> 0?
A.
quadratic function
B.
rational function
C.
absolute value function
D.
square root function
Hint
11.
When will it be true that
?
A.
never
B.
always
C.
only when
x
is not an integer
D.
only when
x
is an integer
Hint
12.
Suppose that Pam could build a house in
months and Jerry could build a house in
months. If they work together, how long would it take them to build the house?
A.
months
B.
months
C.
5 months
D.
10 months
Hint