Producers' Surplus The demand function for a certain brand of CD is given by

$p=-0\mathrm{.}01x^2-0\mathrm{.}2x+10$

where $p$ is the unit price in dollars and $x$ is the quantity demanded each week, measured in units of a thousand. The supply function is given by

$p=0\mathrm{.}01x^2+0\mathrm{.}2x+4$

where $p$ is the unit price in dollars and $x$ stands for the quantity that will be made available in the market by the supplier, measured in units of a thousand. Determine the producers' surplus if the market price is set at the equilibrium price. $($Round your answer to the nearest dollar.$)$

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