Write a numerical expression for divide 144 by 12

Aportion of a line bounded by two points is defined as

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

Sole the equation 6n + 9 = -3n - 21 - 6 for n