1. C
2. (r - 8)(r - 5)
3. 211/4
4. (-1, 0), (4, 0)
5. 7
6. A. The solution is 4
7.
8.
9. 64n16
10.
11. x5
12. -3a4
13. 12x3 + 25x2 + 25x + 6
14.
15. 86400000
16.
17. 1028, B
18. 12
19. A. The solutions are r = -4, 2
20. The x-coordinate of the vertex is
The y-coordinate of the vertex is
The equation of the line of symmetry is
The maximum/minimum of f(x) is
The value is maximum
Correct graph is B
21. A. The solution is
22. |a + 5|
23.
24. -72
25.
26.
27. (c + 5)(c + 5)
28. -1, 5
29. 9(5b + 9d)2
30. A. The solution is 2
31. r3+ p3
32. (6v – 7)(6v + 7)
33. 3, 2, 1, 0, 3
34.
35.
36.
37.
38. Perimeter = 4d + 10
Area = d2 + 5d
39.
40.
41.
42.
43.
44. 0.8
45. 4
46. A
47.
48. A. The solution is a = -1, 9
49. x2 – 10x + 25 = 0
50. The vertex is (-4, 4)
The line of symmetry is x = -4
The max/min value of f(x) is 4
It is the minimum
Correct graph is C
51. t(t – 9)(t + 7)
52. B
53. (9v – 2)2
54. x12
55.
56. 6
57.
58. a) x =
b) x-intercepts are
59. -7, 7
60. -2x2 -5xy -9y2
61.
62.
63. 0
64. k = 4
y = 4x
65.
66. A. The solution set is {x| -9 < x < -2, x > 7