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SS-Chapter 18 (1-2)
| Question | Answer |
|---|---|
| Economics | the study of how we make decisions in a world where resources are limited |
| Needs | things that are required for survival |
| Wants | things that we would like to have, but we do not require |
| Scarcity | not having enough resources to produce all the things we would like to have |
| Economic Models | simplified representations of the real world that are used to explain how the economy works, or to predict what would if something in the economy should change |
| Trade-off | the alternative you face if you decide to do one thing rather than another |
| Opportunity Cost | the cost of the next best use of your time or money when you choose to do one thing rather than another |
| Fixed Costs | costs, or expenses, that are the same no matter how many units of goods are produced |
| Variable Costs | expenses that change with the number of products produced |
| Total Costs | the fixed costs added to the variable costs |
| Marginal Cost | the extra, or additional, cost of producing one additional unit of output |
| Marginal Revenue | the change in total revenue (extra revenue) that results from selling one more unit of output |
| Marginal Benefit | the additional or extra benefit associated with an action |
| Cost-Benefit Analysis | economic model that compares the marginal costs and marginal benefits of a decision |