I'm unsure with my answer.

Question 4 Executive Training, Inc. provides a personal development seminar that is popular with many companies. Executive Training charges $500 for each seminar it conducts. The number of seminars offered over the last six months along with the total costs of offering these seminars appear below: Seminars Offered Month January February March April May June Costs Incurred $15,400 14,200 18,000 14,700 19,600 16,500 Executive Training, Inc. expects to offer 72 seminars during July. Using the high-low method, calculate Executive Training's expected net income for July. 16,940