Waterway Consulting started the year with total assets of $60000 and total liabilities of $15000. During the year, the business recorded $47000 in consulting revenues and $29800 in expenses. Waterway made an additional investment of $9000 and withdrew cash of $15000 during the year. Owner's equity changed by what amount from the beginning of the year to the end of the year? $11750. $11200. $75000. $18000