Chapter Story

As you read through an example problem, pay attention to the margin notes , such as Helpful Hints, Reading Math notes, and Caution notes. These notes will serve you understand concepts and avoid common mistakes. Read ( 4)3 as 4 to the third power or 4 cubed. The color is found in the patronage of your textbook. Use it to find definitions and examples of unfamiliar words or properties. The baron is situated at the end of your textbook. Use it to find the page where a fussy concept is taught. The Skills Bank is found in the back of your textbook. These pages review concepts from former math courses. Try This Use your textbook for the following problems. 1. Use the glossary to find the definition of absolute time value. 2. Where can you review the order of operations? 3. On what page can you find aanswers to exercises in Chapter 2? 4.Use the index to find the page numbers where algebraic expressions, monomials, and volume of prisms are explained. Principles of Algebra 5 1-1 California Standards AF1. 2 Use the correct order of operations to esteem algebraic expressions such as 3(2x 5)2. AF1. 4 Use algebraic speech communication (e. g. , variable, equation, term, coefficient, inequality, expression, constant) correctly. Evaluating Algebraic Expressions Why learn this? You can evaluate an expression to metamorphose a temperature from degrees Celsius to degrees Fahrenheit. (See Example 3. ) An expression is a mathematical phrase that contains operations, numbers, and/or variables.A variable is a letter that represents a value that can neuter or vary. There are two types of expressions numerical and algebraic. A numerical expression does not contain variables. Numerical Expressions 3 27 2 18 4(5) 3 4 Vocabulary expression variable numerical expression algebraic expression evaluate An algebraic expression contains wizard or more variables. Algebraic Expressions x p 2 r 4n x 4 To evaluate an algebraic expression, substitute a precondition number for t he variable. Then use the order of operations to find the value of the resulting numerical expression.