Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 6 - Review - Review Exercises - Page 442: 28

Answer

books that are either Romance books in Texas or Horror books $59,000$

Work Step by Step

$(R\cap T)\cup H$ is the set of books that are either Romance books in Texas or Horror books . $n((R\cap T)\cup H)=n(R\cap T)+n(H)$ because they are disjoint sets. That is $20,000+39,000=59,000$
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