Everything You Need to Ace Math (book cover designs)

Way back when I was working on a cover for my “Functional Programming in Scala” book, I saw this book (Everything You Need to Ace Math in One Big Fat Notebook) on the Facebook page of a bookstore in Alaska that I used to live next to. I’m trying to make functional programming as simple as possible, so I have thought about covers that look a little like this, but I don’t want to go quite that far with the design.