What in the world is "unclear or needs details" about this question? I actually felt the question was a bit long and included some overkill.
What needs to be improved about the question? Certainly, it has enough clarity for a valid answer as thanks to @RossMillikan has a legitmate solution.
Five people voted to close the question, but only one person could bother to tell me why?
I see one recommendation to migrate it to matheducators.stackexchange.com. Personally, I think it might be off topic in MathEducators. Currently on matheducators question page, there is maybe one traditional math question. Isn't math educators for discussion about teaching, creating exams, methods of teaching, what to include in a course or exclude in a course? Does the community consider this question better on the educators site or only a few people?
On a related note, I have seen for quite a while that MSE is unfriendly to those who are in high school or freshman or sophomore level classes. Most of the questions here on MSE are graduate level. If I have a BS in Math and my question is still considered vague or unclear then maybe something is incorrect about the closure system. I could cite many examples but this begins to get off topic.
Some context, originally I didn't realize that link to the question's image was broken. Thanks to @JamesA for noticing and fixing it. This caused some confusion initially. However, the link was fixed first then afterwards the question was closed.