5: Polynomial and Rational Functions Last updated Save as PDF Page ID 89304 Matthew Boelkins, David Austin & Steven Schlicker Grand Valley State University via ScholarWorks @Grand Valley State University 5.1: Infinity, limits, and power functions 5.2: Polynomials 5.3: Modeling with polynomial functions 5.4: Rational Functions 5.5: Key features of rational functions Thumbnail: (CC BY-SA; OpenStax).