Teresa is training for a triathlon, a timed race that combines swimming, biking, and running. Consider the following sentence: Teresa has only 20 hours this week that she can devote to training. Each hour she spends swimming is an hour that she can't spend biking or running. Which basic principle of individual choice do these statements best illustrate? People face trade-offs. Teresa can use time most efficiently by spending the same amounts of time on swimming, biking, and running. People usually exploit opportunities to make themselves better off. Teresa has an incentive to spend more time on swimming than on biking or running.

This term refers to the number of people per unit area (usually a kilometer or a mile). this could refer to the number of people per square mile in a city, a county, a province, a state, or a nation.

How does sociology account for the cause of drug and alcohol addiction?

Marian recently made the decision to try to re-wallpaper her own kitchen—which was a mistake given her personality! to compound the mistake, she selected a complex wallpaper pattern that included flowers and trees. each time she put one strip of paper on the wall, she became increasingly upset if there was not a perfect match from the pattern of one strip to the next. if one flower was off by as much as one-tenth of an inch, she would tear down the strip, remove the excess paste, and try again with the next strip. over eight hours after she started this job, she has only succeeded at putting up six strips of wallpaper, which covered about 10 percent of the room in which she was working. marian may suffer from personality disorder.