Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Question
Transcribed Image Text:!
1
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Q
A
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N
200
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120-
C 100
80-
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2
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0 20 40 60 80 100 120 140 160 180 200 220 240
1
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°F
Read It
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#3
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F3
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(b) The coffee is cool enough to drink when its temperature is 130 degrees. When will the coffee be cool enough to drink? (Round your answer to two decimal places.)
min
C
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(c) What is the temperature of the coffee in the pot? (Note: We are assuming that the coffee pot is being kept hot and is the same temperature as the cup of coffee when it was poured. Roun
your answer to the nearest degree.)
°F
4
(d) What is the temperature in the room where you are drinking the coffee? (Hint: If the coffee is left to cool a long time, it will reach room temperature. Round your answer to the nearest
degree.)
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1
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The temperature C of a fresh cup of coffee t minutes after it is poured is given by
C=125e-0.03t+ 70 degrees Fahrenheit.
1
Q
A
(a) Make a graph of C versus t.
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120
C 100
80
60
40
40
20
F1
2
0
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C100
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80
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40
n
20
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1
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C 100
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0
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120-
C100
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20 40 60 80 100 120 140 160 180 200 220 240
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