# Homework Hints 18-2

### 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 linksĀ in the right-hand column.
http://mathforum.org/

Problems 1-2
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 3-10
Let n = 1, 2, 3, 4, 5. The answers will be a sequence of five values, listed in order. See Example 1.
Problems 11-18
Let n = 1, 2, 3, 4, … . Look for a pattern of the sequence of values for the given expression. See Example 2.
Problems 19-26
Instead of picking particular values, try multiplying each one by 1 (written in a cleaver way, as illustrated in Example 3).
Problems 27-34
Draw a one-dimensional graph for each sequence. See Figure 18.10a.
Problems 35-42
Draw a two-dimensional graph for each sequence. See Figure 18.10b.
Problems 43-56
Instead of picking particular values, try multiplying each one by 1 (written in a cleaver way, as illustrated in Example 4).