You buy a used car for 15,000 it depreciates at the rate of 23% per year. find the value of the car for the given year

For how many years?

In any case I will give you the formula & you will plug into the number of years"

Remaining Value (or Salvage Value) = initial cost (1 - rate%) ^n (number of years

Remaining value after n years = 15000 (1-23%) ^n