Reddit reviews Homework Helpers: Pre-Calculus

In my senior year of high school, I was having a lot of fun in my math classes, so I checked out this Pre-Calculus book from the Homework Helpers series. They have multiple subjects like Pre-Algebra, Algebra, Chemistry, Physics, Geometry and Calculus, but the Pre-Calculus one is the only one I can vouch for. After reading that book, I think it was almost entirely comprehensive of the Pre-Calculus class I took a semester later, fairly brief and well-written. I think it's worth looking into.