Why C is correct

Typically I have a basic plan for what to cover in the calls for each month, but since everyone is taking the SAT this month, I am open to new ideas and suggestions. This can be: - Problem types you're currently struggling with - Ways to improve your score - Specific problems you got wrong that you just do not understand Comment your ideas!

Any idea if this is solveable using Desmos?

Guys, I got this question right by trying it out on the regression and adding approximate values, is this a valid way of solving or too unreliable? My thought process is that I just put the roots into the table, and assumed their remainders = their corresponding y-values. Then once the regression gave me the equation, I added the corresponding coefficients to the given equation and it gave me the right answer. Sooooo, valid method or no?

Can someone Please help me visualize this question. I have a very tough time drawing out / visualizing these sort of questions. I was able to figure out that the distance between Point A and Point C is the radius and hence under root 103 but ahead of that I am just not understanding what the right angle will look like.