The Country Workshop's Total Weekly Profit (In Dollars) Realized in Manufacturing

Short Answer

The Country Workshop's total weekly profit (in dollars) realized in manufacturing and selling its rolltop desks is given by
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where x stands for the number of finished units and y denotes the number of unfinished units manufactured and sold per week. Currently, the weekly output is 145 finished and 130 unfinished units. Determine the approximate change in the total weekly profit if the sole proprietor of the Country Workshop decides to increase the number of finished units to 155 per week and decrease the number of unfinished units to 125 per week.
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$__________ per week