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Find an equation for the line tangent to the curve at the point defined by the given value of t.
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World Price
The global market price of a good or service, influenced by worldwide demand and supply.
Free Trade
Free trade is an economic policy that allows goods and services to be bought and sold across international borders with little to no government tariffs, quotas, subsidies, or prohibitions to inhibit their exchange.
Domestic Supply
The total amount of goods and services produced within a country's borders available for consumption or export.
Domestic Demand
The sum of all requests for goods and services in a country.
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