A reusable scatter plot visualizes company performance by mapping Sales to the x-axis, Profit to the y-axis, and scaling circle radius to Expenses. Semi-transparent blue circles reveal data density and overlap. Built with D3.js v7, the example loads a CSV file via `d3.csv`, then uses `d3.scaleLinear` for axes, `d3.scaleSqrt` for proportional sizing, and `d3.axisBottom`/`d3.axisLeft` to render the chart in an SVG container.