theuniversityshouldthinkcarefullyaboutwhethertoofferthecourse.Ifitoffersthecourseatatuitionthatdoesn’tevencovervariablecost,theuniversityischoosingtosubsidizestudentstoattendsummerschool.Now,saytheprofessor’ssalaryandbenefitsforteachingthecourseare$5,000,theextraelectricityforair-conditioningandlightingcosts$500,and...