The purpose of this appendix is to provide a way to make the software engineering process quantifiable. The mathematical formulas make it simpler to figure out what should be implemented and what should not be implemented. It removes the gut feelings and should be used by software development leads or by the developers themselves . These formulas can be used to improve one's own estimation of what actions should be implemented, how long it takes, and how long it takes to figure out what went wrong. Knowing all of these things, the developer or software development lead can improve the quality of the next software application.