This document contains lesson material from Holt McDougal Algebra 1 on geometric sequences. It includes examples of extending geometric sequences by finding the common ratio and multiplying subsequent terms by that ratio. It also provides examples of finding the nth term of a geometric sequence using the formula an = a1rn-1, where a1 is the first term, n is the term number, and r is the common ratio. Applications include finding future bounce heights of a ball and estimating a car's value after a given number of years.