| A | B |
| Break-even point | The level of sales at which revenues equal total costs |
| Selling price | The amount a seller charges the purchaser for a good or service |
| Profit | Monetary reward a business owner receives for taking the risk involved in investing in a business |
| Variable-cost margin | The amount of variable costs that apply to one unit; also called fixed-cost contribution |
| Sales revenues | Money that comes in to a business from the sale of goods and services; also called income from sales |
| Semi-variable costs | Business costs that vary to some extent in response to sales |
| Variable costs | Business costs that change according to changes in sales volume |
| Fixed costs | Business costs that are not affected by changes in sales volume |
| Total costs | All of a business’s costs, both fixed and variable |