Suppose you have a mean standardized score of 1100 points with a standard deviation of 100 points. this data is normally distributed. what is the z-score of 900 points?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

How do i put 3(x+7) in distributive property