Three pounds of brass are required to make one faucet, and each pound of brass costs $20. The materials inventory at the end of December is expected to be 5,000 pounds, but the firm wants to have 6,000 pounds available at the end of January, 7,000 pounds at the end of February, and 7,500 pounds at the end of March next year. Prepare a direct materials budget for January, February, and March of next year?