Carla Vista Ltd. estimates sales for the second quarter of 2022 will be as follows. Month Units April 2,990 May 3,090 June 2,860 The target ending inventory of finished products is as follows. March 31 2,360 April 30 2,540 May 31 2,520 June 30 2,800 Two units of materials are required for each unit of finished product. Production for July is estimated at 3,110 units to start building inventory for the fall sales period. Carla Vista's policy is to have an inventory of raw materials at the end of each month equal to 50% of the following month's production requirements. Raw materials are expected to cost $4 per unit throughout the period. Calculate the May raw materials purchases in dollars