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What are the four attachment patterns identified by Mary Ainsworth?
Variable Costs
Expenses that change in proportion to the activity of a business, such as costs for raw materials or production inputs.
Fixed Costs
Costs that do not vary with the level of production or sales, such as rent, salaries, and insurance premiums.
Marginal Revenue
The additional income generated from selling one more unit of a good or service.
Marginal Cost
The uptick in the sum total of costs due to the production of an additional unit of a good or service.
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