Answer,a and b, sorry if they are wrong
The sales tax is 2.88 because 6% of 48 is 2.88 so the original price before tax was applied was 45.12
To find the depreciation of the car take the amount it goes down by each year (4.1%) and make x the number of years. 34000 · (4.1% · 7) = 9758. That's your depreciation. Now just subtract the depreciation from the total and you get 24242
