I need some help to solve the word problem.

4. Newton's Law of Cooling states that the rate of cooling of an object is proportional to the temperature difference between the object and the outside air. Suppose that a roast turducken is taken from the oven when it's temperature has reached 185" and is placed on a table where the temperature is 75". If R is the temperature of the turducken after I minutes, then Newton's Law of Cooling implies that aR = A(R- 75) a.) Solve the differential equation for R. Then use the given information to find the particular solution. b.) If the temperature of the turducken is 150 after c.) When will the turducken have cooled to half an hour, what is the temperature after 45 1002 munites