Television Watching A college dormitory houses 200 students. Those who watch an hour or more of television on any day always watch for less than an hour the next day. One-fourth of those who watch television for less than an hour one day will watch an hour or more the next day. Half of the students watched television for an hour or more today. How many will watch television for an hour or more (a) tomorrow, (b) in 2 days, and (c) in 30 days?

EIGHTH EDITION Fundamentals of Differential Equations This page intentionally left blank EIGHTH EDITION Fundamentals of Differential Equations R. Kent Nagle Edward B. Saff Vanderbilt University Arthur David Snider University of South Florida Addison-Wesley Boston Columbus Indianapolis New York San Francisco Upper Saddle River Amsterdam Cape Town Dubai London Madrid Milan Munich Paris Montreal Toronto Delhi Mexico City Sao Paulo Sydney Hong Kong Seoul Singapore Taipei Tokyo Publisher Greg Tobin Editor in Chief Deirdre Lynch Senior Acquisitions Editor William Hoffman Spon