Precalculus
It seems to cover all topics of Precalculus and also covers some preview of Calculus. However, the text does not cover review of Algebra. If it also covers a little bit of reviews such as basic factoring and other topics from Algebra, then it would be better.
I have not found any error/mistake except one minor one. On p.386, Example #11 contains an error in the solution. I am guessing that the author originally intended to have an example with two minuses but included typos.
Due to the nature of the topic, I cannot consider any such issues.
Most of parts are very clearly explained (including a lot of graphs for visualization of the concepts).
Yes.
Due to the nature of the topic, I do not think this question is relevant to this textbook (most of the concepts must be build up based on other concepts).
Yes.
I have not found any interface issues yet.
I have not found any grammatical error yet.
I have not found any parts that are culturally insensitive or offensive in any way.
The textbooks is well organized and written. I do not expect any problem to use this textbook as the main textbook of my Precalculus class.