Chapter 8: Exercises with Solutions

# Elementary and Intermediate Algebra: Graphs & Models (3rd Edition)

This preview shows pages 1–5. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
766 Chapter 8 Exponential and Logarithmic Functions Version: Fall 2007 27. - 36 28. - 100 29. 3 27 30. 3 - 1 31. 3 - 125 32. 3 64 33. 4 - 16 34. 4 81 35. 4 16 36. 4 - 625 37. 5 - 32 38. 5 243 39. 5 1024 40. 5 - 3125 41. Compare and contrast ( - 2) 2 and ( - 2) 2 . 42. Compare and contrast 4 ( - 3) 4 and ( 4 - 3) 4 . 43. Compare and contrast 3 ( - 5) 3 and ( 3 - 5) 3 . 44. Compare and contrast 5 ( - 2) 5 and ( 5 - 2) 5 . In Exercises 45 - 56 , compute the exact value. 45. 25 - 3 2 46. 16 - 5 4 47. 8 4 3 48. 625 - 3 4 49. 16 3 2 50. 64 2 3 51. 27 2 3 52. 625 3 4 53. 256 5 4 54. 4 - 3 2 55. 256 - 3 4 56. 81 - 5 4 In Exercises 57 - 64 , simplify the prod- uct, and write your answer in the form x r . 57. x 5 4 x 5 4 58. x 5 3 x - 5 4 59. x - 1 3 x 5 2 60. x - 3 5 x 3 2 61. x 4 5 x - 4 3 62. x - 5 4 x 1 2 63. x - 2 5 x - 3 2 64. x - 5 4 x 5 2 In Exercises 65 - 72 , simplify the quo- tient, and write your answer in the form x r . 65. x - 5 4 x 1 5
Section 8.1 Exponents and Roots 767 Version: Fall 2007 66. x - 2 3 x 1 4 67. x - 1 2 x - 3 5 68. x - 5 2 x 2 5 69. x 3 5 x - 1 4 70. x 1 3 x - 1 2 71. x - 5 4 x 2 3 72. x 1 3 x 1 2 In Exercises 73 - 80 , simplify the expres- sion, and write your answer in the form x r . 73. x 1 2 4 3 74. x - 1 2 - 1 2 75. x - 5 4 1 2 76. x - 1 5 - 3 2 77. x - 1 2 3 2 78. x - 1 3 - 1 2 79. x 1 5 - 1 2 80. x 2 5 - 1 5

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 8 Exponential and Logarithmic Functions Version: Fall 2007 8.1 Solutions 1. 3 - 5 = 1 3 5 = 1 243 3. 3 2 3 = 27 8 5. 6 - 2 = 1 6 2 = 1 36 7. 2 3 - 3 = 1 ( 2 3 ) 3 = 1 8 27 = 27 8 9. 7 1 = 7 11. 5 6 3 = 125 216 13. Using a graphing calculator, note that the graph of y = x 2 intersects the graph of y = 5 in two places. The intersect was used to determine the x -values of the points of intersection. These are labeled on the x -axis on the image that follows.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern