Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 4 - Section 4.3 - Logarithmic Functions - 4.3 Exercises - Page 354: 102

Answer

(a) At an inch, the vertical distance of the function is $y=2^1=2in$. At $2 ft=24in$, the height of the graph would be $y=2^{24}=16777216in=16777216/63360=264.8\approx265mi.$ (b) For $y=log_2x$, let $y=2ft=24in$, we have $log_2x=24,x=2^24=16777216in\approx265mi.$

Work Step by Step

see above.
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