K The rate of depreciation (in dollars per year) for a certain truck is given by the function below, where t is in years and 1=0 is the year of purchase 5600(0.2+0.241) (1+021-0121²)² 1(t)= (a) Find the total depreciation at the end of 5 years (b) How long will it take for the total depreciation to be at least $28007 (a) The total depreciation at the end of 5 years is approximately $ (Round to the nearest cent as needed)