Forget how to normalize to a range

#1
I used to know how...
I want to normalize a set of data to -2.5 to 2.5, but I only remember how to do between 0 and 1, any help or references would be appreciated. Thanks
 

Dason

Ambassador to the humans
#2
Ok let's say you do know how to normalize to 0-1. What happens if you multiply every value by 3? Whats' the range now? What happens if you add 10 to all the values? What is the range now?