As an accountant, your job is to maintain your clients' accounting ledgers. Total Revenues ($) 900,000 Total Costs ($) Wages and Salaries 750,000 Risk-free return of 2% on owner's capital of $950,000 19,000 Interest on bank loan 50,000 Cost of supplies 150,000 Depreciation of capital equipment Additional wages the dentist owner could have earned in her next best alternative Risk premium of on the owner's capital of $950,000 30,000 0 In total, the firm's explicit costs are equal to $