Functions and their graphs and polynomial and rational functions, Mathematics Textbook Evaluation

I need my paper to be revised, received a poor grade. This is my instructors notes on my paper; “Using capital letters to begin the sections of the paper does not conform to APA format; use headings and subheadings instead. Some aspects of your evaluation are quite superficial (e.g., focusing on the layout of the first book you reviewed). Rather than simply beginning the paper with a critique of the first book, you should have provided an introduction to the topic”.

Attached  is my paper alomg with  tips of how this paper should be done