26. Fixed Costs (FC): prices that don’t ever change الأسعار التي لا تتغير
27. Variable Costs (VC): production costs that change when the level of production changes
يكلف هذا التغيير
28. Total Costs (TC): FC + VC إجمالي التكاليف
29. Marginal Costs (MC): the EXTRA cost of producing one additional unit of output
تكاليف إضافية
30. Additional: more than before إضافي
31. E-commerce: online buying and selling اعمال تجاريه عبر الانترنت
32.Operate: how something runs/works
33. Inventory: the number of products a business has available المخزون
34. Break-even point: when TC = TR
35.Total Revenue (TR): total amount a business earns إجمالي الإيرادات
36. Marginal Revenue (MR): the EXTRA revenue from the sale of one additional unit of output إيرادات إضافية
37. Marginal Analysis (MA): decision making regarding extra costs and benefits to be gained
38. Profit maximizing: when the firm has reached its highest total profit (MC = MR) أعلى ربح إجمالي
