7th-grade math help me, please :(

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

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.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?