value of $$1,800.$ The equipment was used for $1,400$ hours during Year $1,2,600$ hours in Year $2,2,300$ hours in Year $3,$ and $1,200$ hours in Year $4.$

Required:

method, and $($c$)$ the double$-$declining$-$balance method. Note: Round all final values for each depreciation method and each year to the nearest whole dollar.

a$.$ Straight$-$line method

b$.$ Units$-$of$-$activity method

c$.$ Double$-$declining$-$balance method