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 \\( \\$ 625 \\) per student. The cost for the conference room, instructor compensation, lab assistants, and promotion is \\( \\$ 8,030 \\), Micromedia rents computers for its seminars at a cost of \\( \\$ 130 \\) 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: \\[ \\mathrm{C}= \\] (b) Develop a model for the total profit \\( (P) \\) if \\( x \\) students entoll in the seminar. \\[ P= \\] (c) Micromedia has forecast an enroliment of 40 students for the seminar. How much profit will be earned if their forecast is accurate? \\[ P(40)=\\$ \\] (d) Compute the break-even point. \\[ x= \\]