Activity Set 2 (Levels 7-9) for the Math Marathon. Level 7 is an operation duel; Level 8 is a board-game style model hunt; Level 9 is the Place Value Boss challenge. Fixed clipping issues, increased padding for labels, ensured all problems fit on the page, and populated all models with distractors. No narrative theme. 6 problems per page. Fixed vertical alignment and word spacing in headers. Fixes clipping in Standard Form result boxes. Added organization footers. Fixes italic placeholder visibility.