Which of these is not a measure of variation for a data set?

(05.03 mc) part a: explain why the x-coordinates of the points where the graphs of the equations y = 4x and y = 2x−2 intersect are the solutions of the equation 4x = 2x−2. (4 points) part b: make tables to find the solution to 4x = 2x−2. take the integer values of x between −3 and 3. (4 points) part c: how can you solve the equation 4x = 2x−2 graphically? (2 points)

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

Simplify this expression. 8x 16(x + y)