Q3 plz make it fast

Q3. Suppose that during the month of August in Savannah , Georgia, the outside temperature in 0F is given by C(r) = 85 chos(f;), 0 S t S 24 . Determine the temperature in a building that has an initial temperature of 60F if k = l . Assume that the building has no heating or air 4 conditioning system}{Marks=50}(CLO 2}