From this sequence we can see that it is betting larger by 5 every single time.
So we can infer that the n = 5.
But we also have to add a number after that because right now the sequence would be 5,10,15,20. We need to find out how we get to 2 from 5n.*
*2 is the first number in the sequence
And to get 2 from 5 you simply subtract the number 5 by 3. So you end up with 5n - 3
Now that you have the nth term just substitute the term you want to find out so in this instance it is 40. 40 * 5 = 200 and then you take away 3 so It the answer must be 197. Hope this helps