Randall Company manufactures chocolate bars. The following were among Randall's manufacturing costs during the current year: Wages Machine operators $ 300,000 Selling and administrative personnel $ 75,000 Materials used Lubricant for oiling machinery $ 25,000 Cocoa, sugar, and other raw materials $ 225,000 Packaging materials $ 190,000 Randall's direct materials amounted to: Multiple Choice $250,000. $475,000. $225,000. $25,000.

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right