Which inverse operation would be used to verify the following equation? 102 ÷ 3 = 34                a.  3 + 34 = 37      b.  34 − 3 = 31      c.  34 × 3 = 102      d.  102 ÷ 34 = 3

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?