Which of the following is true about "seniority rules"?

Josh’s headmaster fought to keep him, but his hands were tied; under the state’s strict "last in, first out" seniority rules, enshrined in statute, the most recent recruits had to be fired first, regardless of ability.

Car culture was pervasive in the United States for years: The annual number of miles traveled by auto rose decade after decade. Until 2004, that is, when it stopped short. And today, younger Americans are changing their minds about the car. The number of high school seniors with driver’s licenses dropped from 85 percent in 1996 to 73 percent in 2010.