A hot metal object is submerged in cold water with an initial temperature of 100 degrees Fahrenheit. The rate of change, in degrees Fahrenheit per minute, of the object's temperature after t minutes have elapsed is given by r(t). Which quantity is represented by the integral r(t) dt? Briefly explain why. 10 (i) The initial temperature (100 degrees Fahrenheit) of the metal object. (ii) The initial temperature (100 degrees Fahrenheit) of the metal object plus the change in temperature 10 minutes after it was submerged in cold water. (iii) The change in temperature of the metal object 10 minutes after it was submerged in cold water. (iv) The temperature of the metal object 10 minutes after it was submerged in cold water.

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