Prepare a monthly flexible selling expense budget for PineTree Company for sales volumes of $300,000 and $350,000, based on the following data:

Sales commissions	6% of sales
Sales manager's salary	$120,000 per month
Advertising expense	$90,000 per month
Shipping expense	1% of sales
Miscellaneous selling expense	$4,000 per month plus 1.5% of sales