4th Edition

ISBN: 9780136166924

Author: Sullivan

Publisher: PEARSON

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Chapter 1.5, Problem 83AYU

85. Thermostat Control Energy conservation experts estimate that homeowners can save $5%$ to $10%$ on winter heating bills by programming their thermostats 5 to 10 degrees lower while sleeping. In the graph (next page), the temperature T(in degrees Fahrenheit) of a home is given as a function of time $t$ (in hours after midnight) over a 24-hour period.

(a) At what temperature is the thermostat set during daytime hours? At what temperature is the thermostat set overnight?

(b) The homeowner reprograms the thermostat to $y = T (t) - 2$ . Explain how this affects the temperature in the house. Graph this new function.

(c) The homeowner reprograms the thermostat to $y = T (t + 1)$ . Explain how this affects the temperature in the house. Graph this new function.

Source: Roger Albright, 547 Ways to Be Fuel Smart, 2000

Chapter 1.5, Problem 83AYU, 85. Thermostat Control Energy conservation experts estimate that homeowners can save 5% to 10% on

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Chapter 1.5, Problem 82AYU

Chapter 1.5, Problem 84AYU

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Chapter 1 Solutions

PRECALCULUS:CONC LL+MML 18WK PACKAGE

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Solution Summary: Thermostat Control Energy conservation experts estimate that homeowners can save 5 to 10 % on winter heating bills by programming their thermostats 5-10 degrees lower while sleeping.

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