MyMathLab disappoints and angers so many people that even my professors dislike the software and only use it because they are required to. Overpriced and difficult to use. Constantly rejects correct answers because apparently "0.75" and ".75" are different some of the time. (Sometimes either answer would be correct, and other times only one of them would be correct.)
Pearson is not in the business of education for the purpose of education. They are in the business of getting as much money from students as possible.