$(8$ points$)$ Robert Parish Corporation purchased a new machine for its assembly process on

January $1,2014.$ The cost of this machine was $$835,000.$ The company estimated that the machine

would have a salvage value of $$35,000$ at the end of its service life. Its life is estimated at $5$ years,

and its working hours are estimated at $100,000$ hours. Year$-$end is December $31.$

Compute the depreciation expense under the following methods and complete the depreciation schedules

below.

$($a$)$ Straight$-$line depreciation.

$($b$)$ Activity method, assuming that machine usage was $28,000$ hours for $2014$;$29,000$ hours for $2015$ ;

$18,000$ hours for $2016$;$12,000$ hours for $2017$ ; and $13,000$ hours for $2018.$

$($c$)$ Sum$-$of$-$the$-$years'$-$digits.

$($d$)$ Double$-$declining$-$balance.