CPT Review 4/17/01
17
33. D
=
−
2
3
2
6
5
a
a
First find common denominators for your fractions.
2
2
2
2
6
4
5
numerators
the
subtract
Now
6
4
2
2
3
2
and
6
5
6
5
a
a
a
x
a
a
a
a
a
x
a
−
=
=
34. B
b
b
b
3
3
9
2
−
Factor the numerator
(
)
b
b
b
3
1
3
3
−
. Now reduce. Answer 3b-1
35. B
The DoBee.Com Corporation has 5 more than three times as many female as
male supervisors. If “x” represents the number of male supervisors write an
expression that would represent the total number of female supervisors in
terms of “x”.
The statement “five more than” indicates adding “5” to the product of 3x.
Answer ?
5
3
+
x
36. C
Which of the following is not an equivalent statement?
+
−
=
−
5
2
5
2
25
4
2
b
b
b
This is the correct factored form of the given.
(
)
3
3
3
2
2
5
−
=
−
x
x
x
x
This is the correct factored form of the given.
( )
7
3
4
x
x
=
This is incorrect.
( )
12
3
4
x
x
=
4
4
1
x
x
=
−
This is correct
37. C
Charles needs enough fencing to enclose a rectangular garden with a
perimeter of 140 feet. If the width of his garden is to be 30 feet, write the
equation that can be used to solve for the length of the garden.
2 lengths + 2 widths = perimeter Let the unknown length be “x”
( )
140
60
2
140
30
2
2
=
+
=
+
x
x
38. B
Which one of the following ordered pairs is
NOT
a solution for the equation:
3x + y = 12?
The solution is
( )
2
,
6
because when substituted into the equation your solution
is incorrect.
( )
12
2
6
3
≠
+