Hi can you veryfy my homework economy class! Thanks

I have done the anwsers... correct me if im rirght or wrong. Thanks!!!

8 9 If the lathe is to be depreciated over the early portion of its life by the BBB method and then by a switch to the SL method for the remainder of its life, when should the switch occur? If the lathe is to be depreciated over the eady portion of Its life by the DOB method and then by a switch to the SL method for the remainder of its life, when should the switch occur? Lathe DDB LatiieS_L Depreciation Depreciaon l1 Drl BV n Bu 0 43000 D 1 7167 35333 1 3533 2 59?2 29361 2 3258 3 497? 24334 3 2936 4 414? 20737 4 2?:35 5 3-456 17231 5 ' 2592 6 2880 14401 6 2469 7 2400 12001 7 2400 2000 10000 B 2400 9 1667' 8334 9 2500 10 1389 6945 10 2773 11 1157 5'37 11 3472 12 965 4B 23 12 578? In what year should we switch to Straight Line Depreciation in problem #8? 0 On year 4 we should switch to Straight Line Depreciation. d On year 7 we should switch to Straight Line Depreciation. o On year 10 we should switch to Straight Line Depreciation. 0 On year 5 we should switch to Straight Line Depreciation