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Welcome to College Algebra, Ninth Edition. I am proud to present to you this new edition. As with all editions, I have been able to incorporate many useful comments from you, our user. And while much has changed in this revision, you will still find what you expect—a pedagogically sound, mathematically precise, and comprehensive textbook. Additionally, I am pleased and excited to offer you something brand new—a companion website at LarsonPrecalculus.com. My goal for every edition of this textbook is to provide students with the tools that they need to master algebra. I hope you find that the changes in this edition, together with LarsonPrecalculus.com, will help accomplish just that.