2+9n=72
how do you find what n equals?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Which translation maps the vertex of the graph of the function f(x) = x2 onto the vertex of the function g(x) = x2 – 10x +2?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?