Waterway Company purchased Machine #$201$ on May $1,2020.$ The following information relating to Machine #$201$ was gathered at

the end of May.

It is expected that the machine could be used for $10$ years, after which the salvage value would be zero. Waterway intends to use the

machine for only $8$ years, however, after which it expects to be able to sell it for $$2,070.$ The invoice for Machine #$201$ was paid May $5,$

Waterway uses the calendar year as the basis for the preparation of financial statements.

$($a$)$

Compute the depreciation expense for the years indicated using the following methods.

Depreciation Expense

$(1)$ Straight$-$line method for $2020$

$

$(2)$ Sum$-$of$-$the$-$years'$-$digits method for $2021$$

$(3)$ Double$-$declining$-$balance method for $2020$$