Final answer:
The example of the student who failed precalculus in paragraphs 7-8 contributes to the development of ideas in the article by emphasizing the importance of preparation and its impact on success in college.
Step-by-step explanation:
The example of the student who failed precalculus in paragraphs 7-8 contributes to the development of ideas in the article by highlighting the importance of preparation and the consequences of lack thereof. The article discusses the challenges faced by students who cheat their way into elite colleges and argues that their lack of preparation would eventually become clear. The student who failed precalculus serves as an example of someone who was not adequately prepared and highlights the potential negative impact on their success in college.