# Homework Hints 11-5

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

On the other hand, the problems designated “Problem Solving” generally require techniques that do not have textbook examples.

There are many sources for homework help on the internet.

Algebra.help
Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.
http://www.algebrahelp.com/

Dr. Math is a registered trademark. This is an excellent site at which you can search to see if your question has been previously asked, or you can send your question directly to Dr. Math to receive an answer.
http://mathforum.org/dr.math/

Quick Math
This site provides online graphing calculators. This is especially useful if you do not have your own calculator.
http://www.quickmath.com/

The Math Forum @ Drexel
This site provides an internet mathematics library that can help if you need extra help. For additional homework help at this site, click one of the links in the right-hand column.
http://mathforum.org/

Problems 1-6
There are many problems throughout the text labeled IN YOUR OWN WORDS. Just relax; do not be afraid to give your opinion. For the most part, these questions do not have “right” or “wrong” answers. You should spend about five minutes in answering each of these questions.
Problems 7-34
First identify the variables, and then substitute into the annuity formula. If you have a programmable calculator, it would be a good idea to program your calculator for annuities before working these problems. If you program a calculator, be sure to test the output using Example 1.
Problems 35-46
Substitute the given values into the sinking fund formula. If you have a programmable calculator, now would be a good time to program it for sinking fund problems. Be sure to test your program by working Example 3.
Problem 47
Before working this problem read Example 2.  This is an important problem so treat your response with a thoughtful response.
Problems 48-49
First decide what type of financial problem is presented.  These problems are ordinary annuities.  Next, apply the appropriate formula; in this case, see Example 1.
Problems 50-51
First decide what type of financial problem is presented.  These problems are sinking fund problems.  Next, apply the appropriate formula; in this case, see Example 3.
Problem 52
First decide what type of financial problem is presented.  See Example 1.