Heather won 100 lollipops playing horseshoes at her school's game night. Later, she gave four to each of her friends. She only has 8 remaining. How many friends does she have

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?