Flexible budget for selling and administrative expenses for a service company Social Media Inc. uses flexible budgets that are based on the following data: Sales commissions ............................................................ 15% of sales Advertising expense .......................................................... 20% of sales Miscellaneous administrative expenses ........................... $7,000 per month plus 10% of sales Office salaries expense ..................................................... $35,000 per month Customer support expenses ............................................. $11,000 per month plus 18% sales Research and development expense ................................ $35,000 per month Prepare a flexible selling and administrative expenses budget for June 2016 for a sales volume of $400,000,$500,000 and $600,000.