This book had so many errors, the entire class including the instructor were confused. It is very sad to see a textbook in its fifth or sixth edition with so many mistakes. Many of the questions at the end of the chapter are so poorly written, that there was no solution. Clearly, the authors had a goal and a message to convey, but because there was no attention to detail, the message was muddy at best. I remain disenchanted with the general quality of textbooks, but this is one of the worst examples of a textbook I have ever seen. Come on America, educate!