Question 1114737
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revenue R received by a company selling x pairs of sunglasses per week is given by the function R(x) -0.1x^2=90x.
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R(x)-0.1x^2=90x
{{{R(x)-0.1x^2=90x}}}
{{{R(x)=90x+0.1x^2}}}



If you meant something different then rewrite your posting-problem description.