9.3 Section Notes

Remarks:
Geometric sequences are very important for business applications. They also are commonly asked about on exams. Get to know them well. The business community often uses different symbolism for the various concepts of this material. There is variation in the symbolism within the business community. Therefore, one has to understand the concepts not just memorize the formulas. The effects of compound interest, the "rule of 72", morgages, and retirement savings computations are all based upon geometric sequences . All should learn about them.