[pjungwir]

I didn't downvote, but your formulas don't make any sense. What is y? What is k? Why are they multiplied together (or subtracted?)? Isn't x - x + yk simply yk?

Also more substantively, if you are already making $x, why would you volunteer that you'll accept $x to move?

[trcollinson]

I see I should be clearer on that formula, you are absolutely right. What I meant was a range of $x to $x + $y(thousand) more. Such that I would take $100,000 to $110,000 depending on other factors such as benefits.

I also should have been clearer in stating that I generally will pick the initial "$x" value of the range by deciding what I want. However, if asked, I will often state this is where I am at my current position, even if it is not my actual salary. I do not often share what my actual salary is.