Basic College Mathematics: An Applied Approach, 9th Edition

711 Pages·2011·3.66 MB·English

by  Richard N. Aufmann

Availablewiththistext!
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Richard Aufmann and Joanne Lockwood have built their reputations on a successful,
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AIM
Aufmann Interactive Method
The Aufmann Interactive Method (AIM) is a proven learning system that
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To follow the AIM, step through the HOW TO
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the matched EXAMPLE / YOU TRY IT pairs.
Aufmann
HOWTO • 1 Write 3 as a percent.
8
3 3 3 100 300 1
(cid:3) (cid:2) 100% (cid:3) (cid:2) % (cid:3) % (cid:3) 37 % or 37.5%
8 8 8 1 8 2
Interactive
EXAMPLE • 5 YOU TRY IT • 5
Write 2as a percent. Write 5as a percent.
3 6
Write the remainder in fractional form. Write the remainder in fractional form.
2 2 200 Your solution 4
Solution (cid:3) (cid:2)100%(cid:3) % 3. Write as a percent.Write
3 3 3 1 9
83 % remainder in fractional form
4
2 3 44 %
(cid:2)66 % 9
3
For extra support, you can find the complete solutions to
the YOU TRY IT problems in the back of the text.
Method
2 2
SOLUTIONS TO CHAPTER 5 “YOU TRY IT”
(cid:2) 621% You Try
SECTION5.1 2
5 5 500 1
You Try It 5 (cid:2) (cid:5) 100% (cid:2) %(cid:2) 83 %
6 6 6 3
4 13 13
Y T It 6
Ask the Authors
Dick Aufmann Why do I have to take this course? You may have heard that “Math
is everywhere.”That is probably a slight exaggeration but math does find its
way into many disciplines. There are obvious places like engineering,science,
and medicine. There are other disciplines such as business,social science,and
political science where math may be less obvious but still essential. If you are
going to be an artist,writer,or musician,the direct connection to math may be
even less obvious. Even so,as art historians who have studied the Mona Lisa
have shown,there is a connection to math. But,suppose you find these reasons
not all that compelling. There is still a reason to learn basic math skills:
You will be a better consumer and able to make better financial choices
for you and your family.For instance,is it better to buy a car or lease a car?
Math can provide an answer.
I find math difficult. Why is that? It is true that some people,even
very smart people,find math difficult. Some of this can be traced to previous
Joanne Lockwood
math experiences. If your basic skills are lacking,it is more difficult to under-
stand the math in a new math course. Some of the difficulty can be attributed
to the ideas and concepts in math. They can be quite challenging to learn.
Nonetheless,most of us can learn and understand the ideas in the math
courses that are required for graduation. If you want math to be less difficult,
practice. When you have finished practicing,practice some more.Ask
an athlete,actor,singer,dancer,artist,doctor,skateboarder,or (name a profes-
sion) what it takes to become successful and the one common characteristic
they all share is that they practiced—a lot.
Why is math important? As we mentioned earlier,math is found in
many fields of study. There are,however,other reasons to take a math course.
Primary among these reasons is to become a better problem solver. Math can
help you learn critical thinking skills. It can help you develop a logical plan to
We have taught math solve a problem. Math can help you see relationships between ideas and to
identify patterns. When employers are asked what they look for in a new
for many years.
employee,being a problem solver is one of the highest ranked criteria.
During that time, we
have had students ask
What do I need to do to pass this course? The most important
us a number of thing you must do is to know and understand the requirements outlined by
your instructor. These requirements are usually given to you in a syllabus.
questions about
Once you know what is required,you can chart a course of action. Set time
mathematics and this aside to study and do homework. If possible,choose your classes so that you
have a free hour after your math class. Use this time to review your lecture
course. Here you find
notes,rework examples given by the instructor,and to begin your homework.
some of the questions All of us eventually need help,so know where you can get assistance with this
class. This means knowing your instructor’s office hours,know the hours of
we have been asked
the math help center,and how to access available online resources. And finally,
most often, starting do not get behind. Try to do some math EVERY day,even if it is for only
20 minutes.
with the big one.
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Basic College Mathematics
An Applied Approach
NINTH EDITION
Instructor’s Annotated Edition
Richard N. Aufmann
Palomar College
Joanne S. Lockwood
Nashua Community College
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Richard N. Aufmann and Joanne S. Lockwood
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