[Inkscape-user] help with font

I have not used inkscape for a while and was self taught. It is a long learning curve which will be even harder now on my laptop with no mouse. I have a file created years back and need to add one number to it to make it 2015. I can't for the life of me remember which font I used and how to add the 5 in the right size and  right angle. Could someone help please ? I would also like to remove the date completely but don't think that is possible, or is it ? am attaching the file if someone can help I would appreciate. cheers,Joanne