PLEASE HELP !!!

Micromedia offers 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. Micromedia is currently planning a two-day seminar on the use of Microsoft Excel in statistical analysis. The projected fee for the seminar is $580 per student. The cost for the conference room, instructor compensation, lab assistants, and promotion is $10,230. Micromedia rents computers for its seminars at a cost of $125 per computer per day. (a) Develop a model for the total cost (C) to put on the seminar. Let x represent the number of students who enroll in the seminar. C = (b) Develop a model for the total profit (P) if x students enroll in the seminar. P = X (c) Micromedia has forecast an enrollment of 55 students for the seminar. How much profit will be earned if their forecast is accurate? P(55) = $ (d) Compute the break-even point. X =