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A ceramic mug is removed from a pottery kiln once the mug reaches a temperature of 700 degrees Celsius. The temperature of the mug then decreases at a rate given by r(t)=20+100arctant1+t degrees Celsius per minute, where t is the number of minutes since being removed from the kiln. What is the temperature of the mug, to the nearest degree Celsius, at time t=10 minutes?