Mary and lamar establish a tutoring service at a local mall. they tutor college students in math and english. they charge $40 per hour for tutoring. in the month of january they charged for 200 tutoring hours. the expenses of their business are given in the table below. expense amount/month rent of space $4000 electricity $325 advertising $375 using the formula profit = $40(number of hours) – (expenses) , calculate their profit for the month of january.