Two linear functions are shown. Create an equation for a third function that has a greater rate of change than one function but a smaller rate of change than the other function.

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?