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 t= 0 is the year of purchase. f(t) = 5800(0.3 +0.24t) (1+0.3t+0.121) (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 $2900? (a) The total depreciation at the end of 5 years is approximately $ 4745.45. (Round to the nearest cent as needed.) (b) It will take approximately years for the total depreciation to be at least $2900. (Round to two decimal places as needed.)