I had professor Ricardo Salazar for two straight quarters (Math 1 & 31,) and I can say he is a fair professor. First, his grading schemes were similar for both classes. His grading consisted of the following: two midterms, one final, homework, and quizzes. He will take out your lowest midterm grade, but will, instead, count the final at a higher percentage. Second, as a lecturer, he can be very difficult to listen to, as he mumbles, speaks softly, and has an accent. I would highly recommend you sit in the front. He mainly focuses on concepts and proofs, and seldom solved problems. He is pretty helpful in office hours, and is very approachable. The main reason people dislike him is the same reason people dislike math. As aforementioned, Salazar is a decent math professor. Would I recommend him? Sure; but ultimately, the decision is up to you.