functions polynomial WODB

WODB: Polynomial Functions

If you haven’t experienced the conversation stemming from Which One Doesn’t Belong? activities, you are missing out.  
As far as I can decipher (#MTBoS feel free to correct me), this all began with Christopher Danielson’s Shape Book centered around this structure.
From there, a crew of tweeps (headed up by Mary Bourassa) established (YES! Canadian) to curate a collection of problems of this format.