the interior of a quadrilateral is bounded by the graphs of (x+ay)2=4a2 and (ax-y)2=a2 , where a a positive real number. what is the area of this region in terms of a, valid for all a>0?
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the total cost for company x to produce a batch of tools is $10,000 plus $3 per tool. each tool sells for $8. the gross profit earned from producing and selling these tools is the total income from sales minus the total production cost. if a batch of 20,000 tools is produced and sold, then company x’s gross profit per tool is……