Convince me why points B&C are solutions to this system of linear inequalities.

What is the size of the matrix resulting from

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Need on this geometry question. explain how you did it.