This document provides an overview of three business analysis tools: SWOT analysis, gap analysis, and cost-benefit analysis. For each tool, there are brief definitions and links to external resources for additional information. The document focuses on cost-benefit analysis, providing steps for conducting one along with an example comparing costs and benefits of expanding office space over a one year period. It calculates that the cost-benefit ratio for this example project is 0.46 of a year, or approximately 5.5 months.