4 Multiple Choice 1 point 1 You decide to skip going out with friends on Friday night to instead study for a big test in Mr. Green's class. Later you felt sad you didn't go out with friends, but otherwise it was a good decision. Is that an example of: 2 Many trade offs at once O Opportunity cost 3 Cost 4 O Academic success 5 6 5 Ordering 2 points Order the following economic systems from oldest to newest. 7 oldest 8 Traditional economy (Fishing, bartering, and simple trading) 2 Mixed (a little bit of free market and command). Today this is most countries. 10 11 3 Free market and command 12