$($b$)$

Prepare three depreciation tables for $2020,2021,$ and $2022$: one for straight$-$line depreciation $($similar to the one in Illustration $9\mathrm{.}10),$ one for double$-$declining balance depreciation $($Illustration $9\mathrm{.}14),$ and one for units$-$of$-$activity depreciation $($Illustration $9\mathrm{.}12).$ For units$-$of$-$activity, Natalie estimates she will drive the van as follows: $15,000$ miles in $2020$; $45,000$ miles in $2021$;$50,000$ miles in $2022$; $45,000$ miles in $2023$; $40,000$ miles in $2024.$ Recall that Cookie Creations has a December $31$ year$-$end. $($Round depreciation cost$/$unit to $3$ decimal places, e$.$g$.0\mathrm{.}225.)$

Straight$-$line depreciation