Are you fucking serious?

Im stupid, please help me out.

O, at lvl 30 you would have spent a total 60xp.

You mean the total cost or the cost for that level?
If its just the cost at each level then it's linear at a 1 to 10 ratio. If its total money spent to that point then it's a curve, since it would be that same 1 to 10 plus previous costs.

xp cost=lvl*10

Total cost to reach level X is:

sum( 10 * i, i = 1..X)

We can factor out the 10, since it does not depend on i.

10 * sum(i, i = 1..X)

The sum of consecutive integers is well known, and can be found with some googling if you forget it (like I do).

10 * ( X * (X + 1) / 2 )

Simplify.

5 * (X^2 + X)

HTH!

>>1218

You are a very mean man.

SAGE has been used.