The Nature of Mathematics, 12th Edition
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Section 11.1 Homework Hints

    Problems 1-5
    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 6-15
    These problems are designed to help you estimate financial problems. Don't be afraid to guess, check, and then revise, if necessary.
    Problems 16-19
    Use the formula I = Prt. For each problem identify P, the present value; r, the annual rate; and t, the time (in years). See Example 1.
    Problems 20-25
    Use the formula A = P(1 + rt) for Problem 20 (see Example 5);
    A = P(1 + r/n)^(nt) for Problems 21-24 (see Example 8); and
    I = Pe^(rt) for Problem 25 (see Example 9).
    Problems 26-30
    For Problem 26, solve A= P(1 + rt) for P, and then fill in the given values.
    For Problems 27-29, use the present value formula; see Example 12.
    For Problem 30, solve A = Pe^(rt) for P, and then fill in the given values.
    Problems 31-32
    For parts a-e, see Example 8;
    Fpr part f, calculate t as the number of minutes in a year.
    Finally, for part h, see Example 5.
    Problems 33-34
    Use the simple interest formula with t a fraction; see Example 4.
    Problems 35-36
    Use the future value formula for continuous compounding; see Example 11.
    Problems 37-40
    Decide which future value formula to use.
    Problem 41
    See Example 8c.
    Problem 42
    Use the formula I = A - P.
    Problem 43
    See Example 10b.
    Problems 44-45
    Use the future value formula for continuous compounding for inflation; see Example 11.
    Problems 47-48
    Use the simple interest formula with P the unknown value.
    Problem 49
    See Example 11.
    Problem 50
    See Example 13.
    Problem 51
    Use I = Prt and solve for P before solving.

    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/

    Ask Dr. Math
    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/

    Mathematics Home Page
    Access the Clemens and Alcuins Library of CSB/SJU and find one of the world's best collections of mathematical internet sites.
    http://library.csbsju.edu/rqs.phtml?subject_id=32

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