Thank you for viewing! (՞ ܸ. .ܸ՞) The cover is not included. There are scratches on the edges because I used it without the cover. Inside, there are occasional markings and underlining with a highlighter or mechanical pencil up to Chapter 3 of the problem sections. They are small and only on about one page every few pages, so I don't think it's very noticeable. I didn't find any in Chapter 4 and beyond, or in the answer key, based on my own inspection. However, please understand that this is based on my own visual check. m(_ _)m I switched to the "Basic Problem Solving" textbook partway through, so there are many pages in the latter half (especially in the Math A section) that I haven't looked at, so you can use them comfortably like new ♡ I have a dog. I hope you will consider it.