A statistics class of 40 students took a quiz. The highest possible score was 4 points. 10 students scored 4 points, 12 students scored 3 points, 8 students scored 2 point, 6 students
scored 1 point, and 4 students scored 0. Compute the mean, median, and standard deviation
of the scores.​

Solve 2x+y=3 x+y=5 in substitution method

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3