Which is better and faster LINQ Query or Formula?

Question

Hallo,

I just want to know the expert opinion on something I am planning to do. I have to write a method to determine cost of multiple objects . I can do this in two ways

1. Make a table with list of items and costs ( so basically I get cost data from a table - aprox 2000 rows & 3 columns) then use LINQ to list of objects
2. Create a polynomial function to calculate cost of an item ( at lease 10-20 lines of code depend on item)

what is better and faster?

Thanks

Answer 1

If values used in option two never change use this version while if values will change over time use option one.

Answer 2

is there any performance difference between these two?