Airlines seek new ways to save on fuel as costs soar Fuel is an airline's biggest single expense. In 2008, the cost of jet fuel rocketed. Airlines tried to switch to newer generation ai...
macoroeconomics 1. Society as a whole faces opportunity costs because a. there is not enough money to go around b. politicians are greedy c. resources are scarce d. our needs are unlimited 2. Mary decides to spend 3 hours working overtime rather than watching a video with her friends. She earns $9 an hour. Her opportunity cost of working is: a. the enjoyment she would have received had she watched the video with friends. b. $27 she earns working c....