help please

Riverbed, Inc makes and sells serving trays. Each tray uses 1/2 pound of plastic. Budgeted production of trays in units for the next three months is as follows: The company wants to maintain monthly ending inventories of plastic equal to 20% of the following month's budgeted production needs. The cost of plastic is $3 per pound. Prepare a direct materials purchases budget for the month of May. (Round pounds of plastic needed for each bucket to 1 decimal place and cost per pound to two decimal places)