I DO NOT want to dropout of my math class?

senior in high school and im really trying to pull everything together. My biggest issue is doig what needs to be done. I just let assignments go until its late. Even worse i failed my math test. I got a 33. I take AP calculus AB. My teacher emailed me saying he wants to discuss my future in AP calculus. I know this just his fancy way of saying how he is going to try and get me to drop the class for my own good. But i dont know. I hate failing I dont even know how i can explain this to my dad. He alreaffy thinks im super lazy and i dont want him use this against me. Normally ill play videogames but im going straight to the books. I really want to stay in the class so i have to start stufying regularly now. The topic seemed so easy and i miserably failed. He doesnt give partial credit either i think. People think im lost but he speaks so sophisticated its impossible to understand. I have a dummies book that really simplifies it. Hes a good teacher but im like "?" For the whole class