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What were the primary causes of the 2007-2009 U.S. financial crisis?
Perfectly Vertical
A line on a graph that shows an infinite response in the variable measured on the y-axis for any change in the variable on the x-axis, indicating no change regardless of input.
Percentage Change
A mathematical calculation that indicates the degree of change over time as a proportion of the starting value, often expressed as a percentage.
Price Changes
Variations in the cost of goods and services in an economy over a period, affecting inflation or deflation rates.
Excise Tax
A tax levied on specific goods, services, or transactions, often included in the price of the product.
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