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The following table reports prices and usage quantities for two items in $2009$ and $2011.($Round your answers to the nearest integer.$)$

$\backslash$table$[[,$Quantity,Unit Price $($$$)],[$Item$,2009,2011,2009,2011],[$A$,1,500,1,800,8,50,7,55],[$B$,2,1,650,00,1,500,00$