I bought this book for College Calculus 1, It’s a good product and it came on time. I don’t regret spending like couple hundred bucks on this item. The only thing that I found Which should be improving is that book itself has a few practice exercises at the end of each topics, But there’s no answer for them. I’ll like to check out my answer but there’s no way to find out. Besides that, I’m so happy to get this book. B.A