The recorded costs of this machine was 180,000. Evers estimates that the useful life of the machine is 4 years with a $9,900.

1) Evers uses straight-line method of depreciation.

2) Evers uses declining balance method. The rate used is twice the straight line rate.

3)Evers uses the units of activity method and estimates that the useful life of the machine is 129,750 units. Actual usage follows : 2017, 49,000 units; 2018, 37,000 units; 2019, 25,000 units; 2020, 18,750 units.

Depreciation Expense

2017 2018 2019 2020

Straight line method

Declining balance method

Units of activity balance

Please help me with each method for all 4 years.