I have $36 dollars and it goes up by 3 every day how much money would I have after 500 days

I have $36 dollars and it goes up by 3 every day how much money would I have after 500 days

We have a balance function B(d) where d is the number of days passed since we first had $36:
B(d) = 3d + 36

The problem asks for B(500):
B(500) = 3(500) + 36
B(500) = 1500 + 36
B(500) = 1536