Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 11 - Rational Expressions and Functions - 11-7 Graphing Rational Functions - Practice and Problem-Solving Exercises - Page 699: 44


a) Please see the graph. b) 10 miles: $s=100$, 1 mile: $s=1600$, .1 mile: $s=16000$ c) The closer a radio is to a transmitter, the stronger the frequency. Since you are closer to one transmitter than to the other, then the weaker frequency would be muffled by the stronger frequency.

Work Step by Step

a) $d \geq 40$ when $s \leq 1$ b) $s=1600/d^2$ $s = 1600/10^2$ $s=1600/100$ $s=160$ $s=1600/d^2$ $s=1600/1^2$ $s=1600/1$ $s=1600$ $s=1600/d^2$ $s=1600/.1^2$ $s=1600/.01$ $s=16000$
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