Prepare a monthly flexible selling expense budget for Podism Company for sales volumes of $270,000, $350,000, and $480,000, based on the following data:

Sales commissions	7% of sales
Sales manager's salary	$62,000 per month
Advertising expense	$70,000 per month
Shipping expense	2% of sales
Miscellaneous selling expense	$2,500 per month plus 1/2% of sales