Calories in Tea. Tea comes from the Camellia sinensis plant. Even though you'll see many varieties of tea on store shelves, there are only four major categories of tea: white tea, green tea, oolong tea and black tea. The difference between each type is the degree to which each type of leaf is oxidized or fermented.
Mixed or semi-variable cost: A cost that has the characteristics of both variable and fixed cost is called mixed or semi-variable cost. For example, the rental charges of a machine might include $500 per month plus $5 per hour of use. The $500 per month is a fixed cost and $5 per hour is a variable cost.
variable costs. any COSTS that tend to vary directly with the level of output. They represent payments made for the use of variable factor-inputs, notably raw materials and direct labour. A firm will leave a market if in the short run it cannot earn sufficient SALES REVENUE to cover its total variable cost.