J. S. Ratti

J.S. Ratti is a mathematics professor with over 35 years of teaching experience at all levels, currently serving as a full professor and past chair of the mathematics department at the University of South Florida.[3] He is the author of textbooks such as 'Precalculus: A Right Triangle Approach' and 'College Algebra,' co-authored with Marcus McWaters, emphasizing concept development and real-life applications.[2][5]