ST. LOUIS UNIVERSITY
MATH-132 PLACEMENT TEST (Model A)
Name: _________________________________________________ Date: _____________
Instructions: In order to take this class, you are expected to get at least 65 points on this test (it is a pass
or not pass exam).
Each correct answer adds 10 points and each incorrect answer subtracts 5 points. A blank answer neither
adds nor subtracts.
Mark clearly your answer. In case of doubt the answer will be taken as incorrect.
1. Find the x-intercepts of y = x3 - 9x.
A) –3
B) 0, 3
C) 3
D) –3, 0, 3
E) 0
2. Find the x-coordinate of any hole(s) (i.e. points of discontinuity where there are no
x2 2x
vertical asymptotes) in the graph of f ( x)
.
x2 4
A) 2
B) -2
C) -2 and 2
D) -2, 0, and 2
E) 4
3. In the equation y = x2 - 5x – 50, for what values of x is y
A)
x : 5 x 10
B)
x : 10 x 5
C)
x: x
5 or x 10
D)
x: x
10 or x 5
E)
x : 5 x 10
0?
4. For the function y = 2x2 + 6x - 8 determine at what value of x the graph has a minimum.
A)
B)
C)
D)
E)
–1
–2
–1.5
–0.5
–2.5
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5. Find the natural domain for
–4
.
x 12
f ( x)
A)
B)
C)
D)
x = 12
x ≠ 12
x ≥ 12
x > 12
6. Given that
10,
f ( x)
x 3
6 x,
x
2
3 x 8 .
6,
x 8
find f(–9)
A)
B)
C)
D)
10
15
75
Undefined
7. The function graphed is
A)
B)
C)
D)
E)
8.
even on the domain [0, ) only
an odd function only
neither an even nor an odd function.
an even function only
both an even and an odd function
Determine the vertical asymptote(s) of y
A)
B)
C)
D)
E)
x
2
3
.
3x 28
x = -4
x = 4, x = -7
x=7
x=4
x = 7, x = -4
9. Solve for x if log10(x + 2)-log10(x - 1) = 1.
Solution:
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Answer Key
1.
2.
3.
4.
5.
6.
7.
8.
9.
D
A
C
C
D
A
B
B
4/3
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