Chapter 9
Equations,
Inequalities and
Problem Solving
Chapter Sections
9.1 The Addition Property of Equality
9.2 The Multiplication Property of Equality
9.3 Further Solving Linear Equations
9.4 Introduction to Problem Solving
9.5 Formulas and Problem Solv

Step-by-Step Business
Math and Statistics
By Jin W. Choi
Included in this preview:
Copyright Page
Table of Contents
Excerpt of Chapter 1
For additional information on adopting this book for
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Discovering Mathematics
Week 3
Unit 2: Mathematical Models
Unit 3: Numbers
Unit 2: Mathematical Models
Using Formulas
o From words to letters
o Writing formulas concisely
o Constructing your own formulas
Inequalities:
Notation for working with inequali

3 POLYNOMIAL AND RATIONAL FUNCTIONS
238
T A B L E
4Interpolating Polynomial Coefficients on a Graphing Utility
Program INTERP
Output
L2L3
dimL L3M
For(I,2,M,1)
For(J,M,I,-1)
(L3(J)-L3(J-1)/(L1(J)-L1(J-I+1)L3(J)
End
End
Disp L3
(G) If you have a TI-85 or

3.3 Linear and Non-Linear Functions
Most functions of cost are linear functions. If every cup of coffee costs $1.60 then two cups wo
$3.20, three cups would cost $4.80, and so forth. Lets explore what makes a function linear.
Definition of a Linear Functi

C
H
A
P
T
E
R
2
Linear Equations
and Inequalities
in One Variable
n April 13, 1992 the headline of The Chicago Tribune read,
Flood Cripples Loop Businesses. Workers driving pilings
around a bridge had ruptured an abandoned freight tunnel under
the Chicago

174
(3-40)
Chapter 3
Linear Equations in Two Variables and Their Graphs
3.5
APPLICATIONS OF LINEAR
EQUATIONS
The linear equation y mx b is a formula that determines a value of y for each
given value of x. In this section you will study linear equations us

Introduction to Mathematical Modeling
Borrowed from V. A. Bokil
Department of Mathematics
Oregon State University
MTH 323: Spring 2009
Bokil (OSU)
Mathematical Modeling
MTH 323Spring 2009
1 / 14
Outline
1
What is a Mathematical Model?
2
The Process of Mat