How can unit rates and proportional reasoning be used to solve problems?

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

Select the sequences that are geometric.

What is the value of x in the following equation. -x ^3/2 = -27