Write a Differential Equation That Expresses the Following Description of a Rate

question 8

Multiple Choice

Write a differential equation that expresses the following description of a rate: When ice cream is removed from the freezer, it warms up at a rate proportional to the difference between the temperature of the ice cream and the room temperature of 76°. (Use y for the temperature of the ice cream, t for the time, and k for an unknown constant.)

• A) y' = 76 - ky
• B) y' = k(76 - y)
• C) y' = k(76 - t)
• D) y' = 76t - ky

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