A tax on gasoline encourages people to drive smaller, more fuel-efficient cars. Which principle of economics does this illustrate?.

The following table gives the map coordinates and the shipping loads for a set of cities that we wish to connect through a central hub.,(7,(4,(7,(6,(2,( 2,) for the location of the proposed new central hub, the coordinates should be near: x==) if the shipments from city a double, for the location of the proposed new central hub, the coordinates should be near: x==.926.865.017.21