xix PREFACE ■ Real-Life Applications We have included hundreds of real-life applications, many with data updated from the previous edition. They come from fields such as business, entertainment, sports, biology, astronomy, geology, and environmental studies. ■ Function Boxes Beginning in Chapter 2, functions provide a unifying theme throughout the text. Special function boxes offer a comprehensive, visual introduction to each type of function and also serve as an excellent resource for reference and review. Each function box includes a table of values, traditional and calculator-generated graphs, the domain, the range, and other special information about the function. These boxes are assignable in MyMathLab for School. ■ Figures and Photos Today’s students are more visually oriented than ever before, and we have updated the figures and photos in this edition to promote visual appeal. Guided Visualizations with accompanying exercises and explorations are available and assignable in MyMathLab for School. ■ Cautions and Notes Text that is marked CAUTION warns students of common errors, and NOTE comments point out explanations that should receive particular attention. ■ Looking Ahead to Calculus These margin notes offer glimpses of how the topics currently being studied are used in calculus. ■ Use of Graphing Technology We have integrated the use of graphing calculators where appropriate, although this technology is completely optional and can be omitted without loss of continuity. We continue to stress that graphing calculators support understanding but that students must first master the underlying mathematical concepts. Exercises that require the use of a graphing calculator are marked with the icon . SUPPORT FOR PRACTICING CONCEPTS This text offers a wide variety of exercises to help students master college algebra and trigonometry. The extensive exercise sets provide ample opportunity for practice and increase in difficulty so that students at every level of understanding are challenged. The variety of exercise types promotes mastery of the concepts and reduces the need for rote memorization. ■ Concept Preview Each exercise set begins with a group of CONCEPT PREVIEW exercises designed to promote understanding of vocabulary and basic concepts of each section. These new exercises are assignable in MyMathLab for School and provide support, especially for hybrid, online, and flipped courses. ■ Exercise Sets In addition to traditional drill exercises, this text includes writing exercises, optional graphing calculator exercises , and multiple- choice, matching, true/false, and completion exercises. Those marked Concept Check focus on conceptual thinking. Connecting Graphs with Equations exercises challenge students to write equations that correspond to given graphs. Video solutions for select problems are available in MyMathLab for School. ■ Relating Concepts Exercises Appearing at the end of selected exercise sets, these groups of exercises are designed so that students who work them in numerical order will follow a line of reasoning that leads to an understanding of how various topics and concepts are related. All answers to these exercises appear in the student answer section, and these exercises are assignable in MyMathLab for School.
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