-mperature of a northern city from 6 a.m. to 6 p.r 2.3 (in degrees Celsius) and x is the number of hours Expressions would give the average temperature c .m. (x = 9)? dx x) dx C

Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Functions
Section8.CR: Review Problem Set
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On a certain winter day, the temperature of a northern city from 6 a.m. to 6 p.m. can be
modeled by the function
T(x) = -0.3x² - 8.6x - 2.3
where T(x) is the temperature (in degrees Celsius) and x is the number of hours after 6
a.m. Which of the following expressions would give the average temperature of the city
between 8 a.m. (x = 2) and 3 p.m. (x = 9)?
9
(-0.12³
(-0.1x³-4.3x² - 2.3x) dx
9
© ¦ / (-0.12³ 4.3x² - 2.3x) dx
9
(-0.3x² -8.6x - 2.3) dr
(-0.3x² -8.6x - 2.3) de
Transcribed Image Text:On a certain winter day, the temperature of a northern city from 6 a.m. to 6 p.m. can be modeled by the function T(x) = -0.3x² - 8.6x - 2.3 where T(x) is the temperature (in degrees Celsius) and x is the number of hours after 6 a.m. Which of the following expressions would give the average temperature of the city between 8 a.m. (x = 2) and 3 p.m. (x = 9)? 9 (-0.12³ (-0.1x³-4.3x² - 2.3x) dx 9 © ¦ / (-0.12³ 4.3x² - 2.3x) dx 9 (-0.3x² -8.6x - 2.3) dr (-0.3x² -8.6x - 2.3) de
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