A roast is taken from the refrigerator (where it had been for several days) and placed immediately in a preheated oven to cook. The temperature of the roast is R(t) in degrees Fahrenheit. The formula to find the roast temperature, given the time t minutes after being placed in the oven, is stated below. R(t) = 375 - 335e 0.007t (a) What is the temperature of the refrigerator? °F (b) Using function notation: express the temperature of the roast 45 minutes after being put in the oven, and then calculate its value. R( % = °F (c) By how much did the temperature of the roast increase during the first 14 minutes of cooking? °F (d) By how much did the temperature of the roast increase from the first hour to 14 minutes after the first hour of cooking? °F

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
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Chapter6: Exponential And Logarithmic Functions
Section6.1: Exponential Functions
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A roast is taken from the refrigerator (where it had been for several days) and placed immediately in a preheated oven to cook. The temperature of the roast is R(t) in degrees Fahrenheit. The formula
to find the roast temperature, given the time t minutes after being placed in the oven, is stated below.
R(t) = 375 - 335e-0.007t
(a) What is the temperature of the refrigerator?
oF
(b) Using function notation: express the temperature of the roast 45 minutes after being put in the oven, and then calculate its value.
R(
°F
(c) By how much did the temperature of the roast increase during the first 14 minutes of cooking?
°F
(d) By how much did the temperature of the roast increase from the first hour to 14 minutes after the first hour of cooking?
°F
Transcribed Image Text:A roast is taken from the refrigerator (where it had been for several days) and placed immediately in a preheated oven to cook. The temperature of the roast is R(t) in degrees Fahrenheit. The formula to find the roast temperature, given the time t minutes after being placed in the oven, is stated below. R(t) = 375 - 335e-0.007t (a) What is the temperature of the refrigerator? oF (b) Using function notation: express the temperature of the roast 45 minutes after being put in the oven, and then calculate its value. R( °F (c) By how much did the temperature of the roast increase during the first 14 minutes of cooking? °F (d) By how much did the temperature of the roast increase from the first hour to 14 minutes after the first hour of cooking? °F
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