Not too easy. Not too difficult.
I am not a fan of online math courses and this was no exception. The book was difficult to learn from as well. The instructor wasn't bad, but he wasn't very involved or so it seemed. It just wasn't conducive to help me learn in this class.
The videos through Khan academy were very helpful resources and helped explain the course material very well. The area parameter section I had no problem with. Dealing with things involving circles did get a bit tricky, but it all worked out.
Hours per week:
Advice for students:
Stay active in class it is definitely a defining factor of whether or not you will pass this class. Watch all of the Khan academy videos and tutorials. They are probably the greatest tool for learning the material that you can get. They're amazing.