Micro media offer computer training seminars on a variety of topics. In the seminars each student works at a personal computer, practicing the particular activity that the instructor is presenting. Micro media is currently planning a two-day seminar on the use of Microsoft Excel in statistical analysis. The projected fee for the seminar is $600 per student. The cost for the conference room, instructor compensation, lab assistants, and promotion is $9,600. Micro media rents computers for its seminars at a cost of $60 per computer per day. Let the number of student enrolled be represented by “X”. What is a valid mathematical expression for total revenues in this problem?