Problem 2-47 Variable Costs; Graphical and Tabular Analyses (LO 2-8, 2-9) San Diego Sheet Metal, Inc., incurs a variable cost of $40 per pound for raw material to produce a spe- cial alloy used in manufacturing aircraft. 1. Required: Draw a graph of the firm's raw material cost, showing the total cost at the following production levels: 10,000 pounds, 20,000 pounds, and 30,000 pounds. 2. Prepare a table that shows the unit cost and total cost of raw material at the following production levels: 1 pound, 10 pounds, and 1,000 pounds