A pork roast is removed from an oven at 9:00. Its initial temperature is 85 Degrees C. The roast is left on the kitchen counter until 13:00, at which point if is put into the retrigerator; at that time its temperature is 34 C. When the roast is taken out of the refrigerator, at 16:00, its final temperature is 11 C. The room temperature is 23 C and the relrigerator is kept at a temperature of 3C.

a. What is the temperature of the roast at 10:00 ?