Determine the slope of the line consisting the following two points:
A(12, 8) and B(4, 2)
3

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex