Barnett, Ziegler and Bylin's book "Applied Mathematics" is a complete statement of mathematical information important to students studying business, economics, biology, medicine or sociology. The authors focus on solving practical problems, rather than abstract mathematical theory, citing theorem proofs only when absolutely necessary. Books written with the participation of Raymond Barnett are characterized by a diverse applied orientation and an abundance of exercises. The eighth edition continues this glorious tradition. This textbook is absolutely correct from a mathematical point of view and at the same time is "easily absorbed" by students. It contains an exposition of topics of discrete mathematics and mathematical analysis of applied importance