A logistics manager ordering parts wants to choose a mode of transportation
with very low costs. The company can plan ahead, so long delivery times are
not a major problem. What mode of transportation, if available, will best meet
these needs?
A. Railroads
B. Trucks
C. Airplanes
D. Ships

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