HELP ME Which data set has the widest spread?

A.
data set A: 1, 1, 2, 1, 2, 1
B.
data set B: 2, 2, 4, 4, 3, 3
C.
data set C: 1, 1, 2, 2, 1, 5
D.
data set D: 3, 5, 5, 5, 5, 4

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.