Instruct: Classify Amazon reviews into positive or negative sentiment
Query: How many errors is too many?

This and the student guide have enough errors in the solutions that it'll have you questioning your work. Thank goodness for a patient professor (and I'm an A student). The sections don't cover very well the material in the questions at the end of the chapter. It is written a little better than the Algebra book by the same authors but if this can be avoided, avoid it. My own professor doesnt teach out of it, just assigns work from the end of the chapters...thats how bad it is.