James Stewart-Calculus_ Early Transcendentals-Cengage Learning (2015)

A66 Appendix I Answers to Odd-Numbered Exercises
67. (a) R (%)
0 I (in dollars)
(b) $400, $1900
11. f sxd − 23xsx 1 1dsx 2 2d
15
10
13. (a) 8.34, change in mg for every 1 year change
(b) 8.34 mg
10,000 20,000
15. (a) F
(100, 212)
9
F= C+32
5
32
(c) T (in dollars)
0
2500
(_40, _40)
C
1000
10,000 20,000 30,000
I (in dollars)
69. f is odd, t is even 71. (a) s25, 3d (b) s25, 23d
73. Odd 75. Neither 77. Even
79. Even; odd; neither (unless f − 0 or t − 0)
Exercises 1.2 • Page 33
1. (a) Logarithmic (b) Root (c) Rational
(d) Polynomial, degree 2 (e) Exponential (f) Trigonometric
3. (a) h (b) f (c) t
5. hx | x ± y2 1 2nj, n an integer
(b) 9 5 , change in 8F for every 18C change; 32, Fahrenheit temperature
corresponding to 08C
17. (a) T − 1 6 N 1 307
6 (b) 1 6 , change in 8F for every chirp per
minute change (c) 768F
19. (a) P − 0.434d 1 15 (b) 196 ft
21. (a) Cosine (b) Linear
23. (a) 15
A linear model is
appropriate.
7. (a) y − 2x 1 b,
y
where b is the y-intercept.
b=3 b=0
b=_1
0 61,000
y=2x+b
x
(b) y − 20.000105x 1 14.521
15
(b)
(c)
(b) y − mx 1 1 2 2m,
where m is the slope.
y
m=_1
(2, 1)
m=1
m=0
0 61,000
(c) y − 20.00009979x 1 13.951
(d) About 11.5 per 100 population
(e) About 6% (f) No
x
25. (a) See graph in part (b).
(c) y − 2x 2 3
y-1=m(x-2)
(b) y − 1.88074x 1 82.64974
180
9. Their graphs have slope 21.
c=_1
c=_2
y
Height (cm)
0 x
c=2
c=1
c=0
150
35 55
Femur length (cm)
(c) 182.3 cm
Copyright 2016 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s).
Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.