Question

13. Suppose you purchase a car for $24,500, and it depreciates at the rate of $1,500 a
year. Express the car's value after five years as a term in an arithmetic sequence.

I understand it starts at

24500 and it is -1500

and it's something like

xn = a + d(n-1)

D the common difference is -1500

the first term is 24500? Or is it 24500-1500?