This document provides an overview of key concepts and examples for understanding and applying percentages in business contexts. It covers converting between percentages, decimals, and fractions; using the percentage formula to solve problems involving a base, rate, and portion; determining rates of increase or decrease; and problems involving percentage points. Examples throughout demonstrate calculating percentages for business scenarios like market shares, sales, prices, and surveys.

1. Percents and Their Applications in Business (p.166) CHAPTER 6

3. Understanding Equations The process of finding the numerical value of the unknown in an equation. Solve an Equation The knowns (constants) and unknowns (variables) of an equation. In the equation X + 7 = 10, the terms are X, 7, and 10. Terms The parts of an equation that are given. In equations, the knowns are constants (numbers), which are quantities having a fixed value. In the equation X + 7 = 10, 7 and 10 are the knowns or constants. Constants (Knowns) A mathematical operation or a quantity stated in symbolic form, not containing an equal sign. X + 7 is an expression. Expression A mathematical statement expressing a relationship of equality; usually written as a series of symbols that are separated into left and right sides and joined by an equal sign. X + 7 = 10 is an equation. Equation A mathematical representation of a fact, rule, principle, or other logical relation in which letters represent number quantities. Formula

6. Converting Percents to Decimals Example 28% .28 13.4% .134 .065 6½% = 6.5% .0002 .02%

8. Converting Decimals to Percents Example 3.5 .34½ 350% .345 = 34.5% .935% 533% .00935 5.33

10. Converting Percents to Fractions Example

11. Converting Percents to Fractions Example (cont’d)

13. Converting Fractions to Percents

14. SECTION 2 (p.172)