please use excel to solve this question:

Dr. Molar is trying make $4,000 per day profit in her dental practice, working an 8-hour day. She needs to schedule 3x as many exams per day as treatment appointments to keep the patient flow. Exams are billed at $145 take 20 minutes of her time and 20 minutes of her assistant's time. Treatment appointments are billed at $725 take 40 minutes of her time and 60 minutes of her assistant's time. Assume that all the billed amounts are collected. The assistant makes $30/hr. Exams use $10 in materials. Treatment appointments have lab expenses of $50 and use $20 in materials. Build a model to help Dr. Molar reach her profit goals.