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Math 108 Topics in Mathematics | Section 0202 | James Baglama | **Chapter 21**

Reading Assignment |
Video |
Lecture Notes |

21.1 Arithmetic Growth and Simple Interest pages 767 - 769 |
Section 21.1 Video |
Section 21.1 Lecture notes |

21.2 Geometric Growth
and Compound Interest pages 769 - 777 |
Section 21.2 Video |
Section 21.2 Lecture notes |

21.3 A Limit to Compounding pages 778 - 780 |
Section 21.3 Video |
Section 21.3 Lecture notes |

21.4 A Model for Saving pages 780 - 784 |
Section 21.4 Video |
Section 21.4 Lecture notes |

21.5 Present Value and Inflation pages 784 - 788 |
Section 21.5 Video |
Section 21.5 Lecture notes |

- The quiz for Chapter 21 will only be available from 12:00am Nov. 21 - 11:55pm Dec. 9.
- The quiz will consist of 10 multiple choice questions.
- You will have a maximum of two hours to complete the quiz.
- You will be allow two tries. The computer will only accept the last score. If you are happy with your score on the first try, do not try again. I cannot change your grade back.
- Failure to take a quiz in the given time slot will be given a zero. No exceptions!

- Chapter 21

pages 794 - 800 Problems 3, 11, 12, 24, 56

Due by 11:55 pm Monday Dec. 9. Use the Assignments tool to submit homework. - I will grade and return the homework within two days. I suggest doing the homework and wait for it to be graded before attempting the Quiz.
- I am only collecting the even problems. Do a similar odd problem and all of the Skill Check problems to make sure you understand the concepts. The answers to the odd problems and the Skill Check problems are in the back of the book!!
- I will NOT accept homework with answers only.

- Go to the companion website and navigate to applet exercises for chapter 21 and try the applet Saving for Retirement
- In the companion website navigate to Video Clips for chapter 21.
- Watch the movie The Mathematics of Geometric Growth
- Watch the movie A Model for Accumulation
- Watch the movie Exponential Decay

- In the companion website try online quiz for chapter 21.

- Should you stock up on “forever” stamps? In 2007 the U.S. Postal Service began selling such stamps, which will suffice for first-class postage at any time in the future, even when rates rise. Until rates rise, these stamps cost $0.41. Would it be a good investment to buy a “lifetime supply” of them? To render your judgment, compare the historic increases postal rates (see www.vaughns-1-pagers.com/economics/postal-rates.htm) with the CPI (p. 816). For example, you could convert postal rates at each of the dates of change to the cost in today's dollars, then see if there appears to be a recent trend that you can project into the future.

- Discussion for Chapter 21 will open at 12:00 am Thursday Nov. 21.
- You are required to participate in the discussion boards.
- Discussion topic will end at 11:55 pm Monday Dec. 9.
- See the syllabus on the grading rubric for discussions.

__Contact:__

Texting hours 9am - 8pm

(401) 268-7160

Email: jbaglama@math.uri.edu

__Office hour:__

By appointment only

The required textbook,
"For All Practical Purposes", 9^{th} edition by COMAP,
Publisher W.H. Freeman. Do NOT use an older edition. All students
must have either a phyiscal copy of the textbook or an
ebook.Click
on the textbook above to go to the ebook.

The required textbook,
The textbook "For All Practical Purposes", 9^{th} edition by COMAP,Publisher W.H. Freeman
has a campanion website. The campanion website contains a lot helpful material,e.g. Java Applets, falshcards, practice quizzes.
The site can be accessed via the link
Campanion or click
on the picture above to go to the campanion website.

Math 108 Topics in Mathematics | James Baglama | jbaglama@math.uri.edu | University of Rhode Island.