1. 11 and 25
2. C=2.5x+3,650
3. 45 mi/h
4. L=37 cm, W=18 cm
5. 250 ft2
Solutions to Odd-Numbered Exercises
1. Answers may vary. Possible answers: We should define in words what our variable is representing. We should declare the variable. A heading.
3. 2,000−x
5. v+10
7. Ann: 23; Beth: 46
9. 20+0.05m
11. 300 min
13. 90+40P
15. 6 devices
17. 50,000−x
19. 4 h
21. She traveled for 2 h at 20 mi/h, or 40 miles.
23. $5,000 at 8% and $15,000 at 12%
25. B=100+.05x
27. Plan A
29. R=9
31. r=54 or 0.8
33. W=2P−2L=258−2(15)=14
35. f=p+qpq=8+138(13)=21104
37. m=4−5
39. h=b1+b22A
41. length = 360 ft; width = 160 ft
43. 405 mi
45. A=88 in.2
47. 28.7
49. h=πr2V
51. r=πhV
53. C=12π
Licenses & Attributions
CC licensed content, Specific attribution
College Algebra.Provided by: OpenStaxAuthored by: OpenStax College Algebra.Located at: https://cnx.org/contents/9b08c294-057f-4201-9f48-5d6ad992740d@3.278:1/Preface.License: CC BY: Attribution.