The rate of reaction for a certain drug in the appropriate units is given by 8 2 R'(t) = t+1 t+1 where t is time (in hours) after the drug is administered. Find the total reaction to the drug over the following time periods. Round your answers to three decimal places as needed. From t = 1 hour to t = 8 hours, the total reaction of the drug is units. From t = 8 hours to t = 20 hours, the total reaction of the drug is units