Differential Equation problem: A thermometer is taken from a room with an 70° F temperature and placed outside with a 10° F temperature. The temperature reads 50° F after half a minute. What is the temperature reading at 1 min on the thermometer? When the thermometer reaches 15° F, how long will it take?

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter6: Exponential And Logarithmic Functions
Section6.7: Exponential And Logarithmic Models
Problem 15TI: Cesium-137 has a half-life of about 30 years. If we begin with 200 mg of cesium-137, will it take...
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Differential Equation problem:

A thermometer is taken from a room with an 70° F temperature and placed outside with a
10° F temperature. The temperature reads 50° F after half a minute. What is the temperature
reading at 1 min on the thermometer? When the thermometer reaches 15° F, how long will
it take?

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