Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 9 - Measurement - 9.3 Measuring Weight and Temperature - Exercise Set 9.3: 78

Answer

$a. 20^{\circ}~C$

Work Step by Step

In the Sahara Desert, the daytime temperature can reach over $40^{\circ}~C$. Clearly $40^{\circ}~C$, $60^{\circ}~C$, and $80^{\circ}~C$ are too hot for a thermostat setting in a home. A temperature of $20^{\circ}~C$ is not hot, but it is about the temperature of a warm spring day. This would be a comfortable temperature for a home. The best estimate for the temperature of a setting on a home thermostat is $20^{\circ}~C$.
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