assuming the given sales mix is the same, at what sales revenue does ecu dental break-even?

ECU Dental Clinics offers the following three basic dental services: Variable costs include the labor costs of the dental hygienists and dentist. Fixed costs of $300,000 per year include building and equipment costs, marketing costs, and the cost of administration. ECU Dental is subject to a 30% tax rate on income. A cleaning "unit" is a routine teeth cleaning that takes about 45 minutes. A filling "unit" is the work done to fill one or more cavities in one session. A capping "unit" is the work done to put a crown on one tooth. If more than one tooth is crowned in a session, then the clinic counts each tooth as a unit (e.g., putting crowns on two teeth counts as two units)