Ever wonder why colleges use GPAs, ACTs, and SATs for purposes of admission, or how supply and demand play out on a freeway, or what price has to do with being late to class, or how you might end up paying for good weather? ECONOMICS, 13E answers these questions and many more as this book opens up the world of economic analysis. This edition offers more detailed coverage of how economists build theories to explain everyday life than any other principles of economics text on the market. Memorable examples from pop culture illustrate the unexpected places economics occur and show you how economic forces link to every day events. This edition offers complete video assets to assist you in learning economics. There are short video lectures to assist you with key economic concepts and theories. In addition, Video Office Hours (longer video lectures) is a digital video asset that answers questions that students often have for their instructors during office hours. There are also videos assets - such as What�s Wrong with this Diagram? �Working with Diagrams� and �Progression Graphs� that assist you in learning and working with all the diagrams that are in an economics principles course. A new Adaptive Test Prep available on MindTap Enables you to assess your personal economic understanding. Powerful digital resources, including Aplia and MindTap, work with the book�s latest content to reflect today�s changing economy and equip you with a thorough understanding of contemporary microeconomics.