The temperature of a machine, when it is first shut down after operating, is 220°C and temperature of surrounding air is 30°C. After 20 minutes, the temperature of machine is 160°C. Find a function that gives the temperature of the machine at any time t and then find the temperature of the machine 30 minutes after it is shut down.
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After 2 minutes in a room at 70°F, the coffee has cooled to 165°F. Find the time that it will take for the coffee to cool to 120°F. 165−70 ... After 5 minutes, the egg's temperature is 38°C.
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