ChicagoTARDIS wrap-up

For a bunch of people who had to leave in a hurry, Big Finish put on a pretty good show at the closing ceremony. Jason Haigh-Ellery was trying to give a dignified goodbye speech, but everyone else stood in a line behind him, waving their arms like a dance maneuver. When he turned around to see what the audience was laughing at, they all went still. When he turned back to the audience, Nick Briggs stuck his arms under Jason's armpits and started fooling around again. Jason did an impressive job of ignoring the hands pawing at his face and chest... until Nick went for his crotch.

A bunch of photos under the cut: Rob Shearman's fabulous autograph, Occupy Gallifrey (I missed getting a shot of "Occupy Jack: You know he'd like it!"), femme 5, Idris, River Song, and the Two Tens. ( Clicky! )

In Which Nea Sucks at Math

Long story short: knitting is algebra and I suck at algebra. I can easily figure out "a piece this big will be x number stitches wide and 2x high thus taking y yards." What I can't do is run the numbers backwards - I have y yards, what size swatch can I make and with how many stitches?

TL;DR: Can someone who is better at math please reteach me how to solve this equation for x: (2x)x = y

(Also, anyone who knows the average inwards pull of ribbing is going to save me some test knitting.)