Find the midpoint of the line segment with end coordinates of: ( − 2 , − 4 ) and ( 2 , − 10 )

Last month, leonhard euler's watch kiosk at the mall had total sales of $9,489. merchandise totaling $225 was returned. the goods that were sold cost leonhard euler's $5,481. operating expenses for the moth were $992. what was the gross profit on sales?