I keep getting the straight line method wrong and the double-declining method wrong. What am I doing wrong?

CengageNOWV2 Online teacl x :: Cengage Learning milm/takeAssignment/takeAssignmentMain.do?inprogress true eBook Calculator Depreciation by Three Methods; Partial Years Layton Company purchased tool sharpening equipment on October 1 for $108,000. The equipment was expected to have a useful life of three years or 12.000 operating hours, and a residual value of $7,200. The equipment was used for 1,350 hours during Year 1, 4,200 hours in Year 2, 3,650 hours in Year 3, and 2,800 hours in Year 4. Required: Determine the amount of depreciation expense for the years ended December 31, Year 1, Year 2, Year 3, and Year 4, by (a) the straight-line method, (b) the units-of- activity method, and (c) the double-declining-balance method. Note: FOR DECLINING BALANCE ONLY, round the multiplier to five decimal places. Then, round the answer for each year to the nearest whole dollar. a. Straight-line method Year Amount Year 1 25,200 X Year 2 25,200 x Year 3 25,200 x Year 4 25,200 b. Units-of-activity method Year Amount Year 1 11,340 Year 2 35,280 Year 3 30,660 Year 4 23,520 C. Double-declining-balance method Year Amount Check My Work Previous ow.com/ilm/takeAssignment/takeAssignment Main.do?inprogress true eBook Calculator 20200 b. Units-of-activity method Year Amount Year 1 11,340 Year 2 35,280 Year 3 $ 30,660 Year 4 23,520 c. Double-declining-balance method Year Amount Year 1 .. 27,000 x Year 2 v Year 3 Year 4 Feedback Asset cost minus residual value equals depreciable cost. Sum the yearly depreciation to determine total depreciation Annual units-of-output depreciation allocates the cost of the asset equally over the hours operated (hours). The double-declining rate is two times the straight-line rate. Book value is the asset cost minus accumulated depreciation Compare the total depreciation for all methods over the time period. Recall that straight-line method allocates the depreciable cost of the asset equally over the period of use, while double-declining-balance method is an accelerated method. Check My Work Previous All work saved Email Instructor Save and it Submit Assignment for Grading