Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks A company that teaches self-improvement seminars is holding one of its seminars in Lanberry. The company pays a flat fee of $168 to rent a facility in which to hold each session. Additionally, for every attendee who registers, the company must spend $2 to purchase books and supplies. Each attendee will pay $86 for the seminar. Once a certain number of attendee register, the company will be breaking even. What will be the company's total expenses and revenues? How many attendees will that take?