Lina purchased a new car for use in her business during $2023.$ The auto was the only business asset she purchased during the year, and her business was extremely profitable. Calculate her maximum depreciation deductions $($including $179$ expense unless stated otherwise$)$ for the automobile in $2023$ and $2024($Lina doesn't want to take bonus depreciation for $2023$ or $2024)$ in the following alternative scenarios $($assuming half$-$year convention for all$)$:

a$.$ The vehicle cost $$35,600,$ and business use is $100$ percent $($ignore $179$ expense$).$

b$.$ The vehicle cost $$80,600,$ and business use is $100$ percent.

c$.$ The vehicle cost $$80,600,$ and she used it $80$ percent for business.

d$.$ The vehicle cost $$80,600,$ and she used it $80$ percent for business. She sold it on March $1$ of year $2.$

e$.$ The vehicle cost $$80,600,$ and she used it $20$ percent for business.

f$.$ The vehicle cost $$80,600,$ and is an SUV that weighs $6,500$ pounds. Business use was $100$ percent.