9. No, the base is not a constant.
11. Yes, the base is 12.
13. No, the base is not a constant.
15. No, the base is not a positive constant.
17. 15
19. 0.0892, 11.2116
21. 49, 72964
23. 322√
25. 2π
27. 36√
29. a6
31.
4x
3x
33.
15⋅5x
5⋅(15)x
35.
37.
39.
41.
43. c
45. a
47. Domain: (−∞, ∞); range: (1, ∞); horizontal asymptote: y=1
49. Domain: (−∞, ∞); range: (0, ∞); horizontal asymptote: y=0
51. Domain: (−∞, ∞); range: (0, ∞); horizontal asymptote: y=0
53. Domain: (−∞, ∞); range: (3, ∞); horizontal asymptote: y=3
55. Domain: (−∞, ∞); range: (−∞, 1); horizontal asymptote: y=1
57. Domain: (−∞, ∞); range: (−1, ∞); horizontal asymptote: y=−1
59. Domain: (−∞, ∞); range: (−∞, 4); horizontal asymptote: y=4
61. f(x)=(1.5)x+2; f(2)=4.25
63. f(x)=(13)x−2; f(2)=−179
65. y=2x+2+5
67. y=2(12)x−5
69. Reflection about x-axis and vertical shift up by 2
71. $2500
73. $5764.69
75.
$7936.21
$4436.21
77.
$12,365.41
$4865.41
79. $4631.93
81. $4493.68
83. f(x)=e−x; y=0
85. f(x)=ex−2; y=0
87. f(x)=1+ex; y=1
89. f(x)=−ex−2+3; y=3