i need help w 3 and 4

Question 3) In recent years, Dobbs Company has purchased three machines. Because of a bad employee named Wares in the accounting department, a different accountant was hired to take charge of selecting the depreciation method for each machine. Information concerning the machines is summarized in the table below. Machine Acquired Cost Salvage Useful Life Depreciation Value(in years) method Jan. 1, 2020 $96,000 $12,000 15 Straight-line 2 Oct. 1, 2021 $85,000 $10,000 Double-Declining Balance 3 Nov. 1, 2021 $66,000 S 6,000 Units-of-Activity For the units-of-activity method, total machine hours are expected to be 30,000. Actual hours of use in the first 3 years were: 2021, 800: 2022.4,500; and 2023, 7,000. 5 6 Instructions: A) Compute the amount of accumulated depreciation on cach machine at December 31, 2023. B) If machine 2 was purchased on April 1 instead of October 1, what would be the depreciation expense for this machine in 2021? In 20222 Question 4) Patterson Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on May 1, 2021, at a cost of S100.000. Over its 4-year useful life, the bus is expected to be driven 160.000 miles Salvage value is expected to be 55.600. Instructions. Prepare a depreciation schedule (as shown in class) assuming actual mileage was: 2021, 40,000; 2022, 52.000, 2023, 41.000; and 2024, 27.000