Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 3 - Differentiation - 3.4 Rates of Change - Exercises - Page 129: 12

Answer

$5.897$ $°C/hr$

Work Step by Step

The time interval from 8:36 AM to 9:34 AM has length 58 minutes The change in temperature over this time interval is $ΔT$ = $-42-(-47.7)$ = $5.7$ °C $\frac{ΔT}{Δt}$ = $\frac{5.7}{58}$ = $0.0983$ °C/min $\frac{ΔT}{Δt}$ = $0.0983\times60$ = $5.897$ °C/hr
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