Diagnostic Examination

Georgia O'Keeffe's Line and Curve

1. If you divide 12ab3 by 4b, the answer is
(a) 3ab2
(b) 0
(c) 8b2
(d) ab2
(e) ab3 - b
2. Simplify [a4 - 4a2 +4]1/2
(a) |a2 +2|
(b) a2 +2
(c) |a2-2|
(d) a2 + 2a + 2
(e) a2-2
3.
Evaluate
( 1

x
+ 3 ) ( 5 + 2

x2
).
(a)
5

x
+ 15 + 2

x3
+ 6

x2
(b) All of the other answers are incorrect.
(c)
5

x
+ 6

x2
(d)
11

x
+ 15 + 2

x2
(e)
4

x
+ 6

x2
4. The line containing the points (1,1) and (1,3) has
(a) positive slope
(b) slope 0
(c) negative slope
(d) undefined slope
(e) All of the other answers are incorrect.
5. The set of points (x,y) such that   x2 -2x + y2 -6y = 6   is a circle of radius
(a) 5
(b) 51/2
(c) 61/2
(d) 4
(e) 6
6. The circle with equation x2 + y2 - 2y = 0 intersects the line y = mx in two distinct points
(a) for all values of m
(b) if and only if m > 0
(c) for no values of m
(d) if and only if m < 0
(e) if and only if m is not equal to 0
7. If 2(2x-3) + 5(x + 1) = 6x-7, what is x?
(a) x = -2
(b) x = 8
(c) x = 4
(d) x = -4
(e) x = 2
8. If x = y and x2y2 - 5xy + 6 = 0, then which of the following is possible?
(a) x2 = 3
(b) x = 2
(c) x = 3
(d) x2 = 6
(e) x = 6
9. How many real solutions for x are there to the equation x2 + 3x + 8 = 0?
(a) 2
(b) 3
(c) 1
(d) It cannot be determined.
(e) 0
10. If f(x) = 2-x, find f(4).
(a) -16
(b) 8
(c) -1/16
(d) 16
(e) 1/16
11. log2(x2 y2) is equal to which of the following?
(a) All of the other answers are incorrect.
(b) [log2(x)]2 + [log2(y)]2
(c) 2log2(x) + 2log2(y)
(d) log2(x2) log2(y2)
(e) log2(x) + log2(y)
12. log(x2 - 2x +1) > log(25) reduces to
(a) x < -4 or x > 6
(b) x > 6
(c) x < 6
(d) x > -4
(e) x < -4
13. The function f(x) = x2 has range
(a) The set of all numbers
(b) The set of all numbers x such that x is less than or equal to 0
(c) The set of all numbers x such that x is greater than or equal to 1
(d) The set of all numbers x such that x is greater than or equal to 0
(e) The set of all numbers x such that x is less than or equal to 1
14. If h(x) = x3, g(x) = x2+1 and f(x) = x +1, then h(g(f(0))) + f(g(h(0))) is:
(a) 0
(b) 10
(c) 9
(d) 4
(e) 16
15. If f(x) = 3x + 3 what is f(f(2))?
(a) 81
(b) All of the other answers are incorrect.
(c) 30
(d) Not defined.
(e) 9
16.
The expression
-4 < 3x + 4

8
< 12
is equivalent to which of the following?
(a) -4 < x < 12
(b) -36 < 3x < 92
(c) -12 < x < 31
(d) All of the other answers are incorrect.
(e) -4 < x < 93
17. The inequality x3 < 2x2 -x reduces to
(a) x < 1
(b) x < 0 or x is not equal to 1
(c) x > 1
(d) x > 0
(e) x < 0
18. [x2 - 6x + 9]1/2 < | x - 1 | reduces to
(a) x < 3
(b) x < 1
(c) x < 2
(d) x > 2
(e) x > 3
19. If 3x + 4y = 7 and 5x-4y = 1, then xy is
(a) 2
(b) 3
(c) 4
(d) 1
(e) Cannot be determined
20. If 4x - y = 1 and 2x + y = 5, then 3xy is
(a) 3
(b) 6
(c) 9
(d) Cannot be determined
(e) 0
21. If y + 4x - 5 = 0 and y = x2, then there is a solution with y given by
(a) y = 30
(b) y = 25
(c) Cannot be determined
(d) y = 0
(e) y = 20
22. The radian measure of an angle of 45 degrees is
(a) pi/4
(b) pi
(c) pi/3
(d) pi/2
(e) 2pi/3
23. If sin(a) = 1, cos(b) > 0, and sin(b) = 1/2, then sin(a + b) is
(a) 2/(31/2)
(b) 2/3
(c) 3/2
(d) 31/2/2
(e) 1/2
24. Two lines each contain the point (0,0). One line has slope 3 and the other line has slope 5. The tangent of the angle interior to the lines is
(a) 1
(b) 0
(c) 8
(d) 2
(e) 1/8