What does f(g(3)) equal

Of the 168 hours in a week as a full time student you should spend how many hours per week on school work?

The y-value if a data point corresponding to x1

Based on the narrator's comments about living with the widow douglas, the reader can infer that a) the narrator doesn't care much for civilization and its strict rules. b) the narrator admires and wants to become more civilized and refined. c) the narrator is extremely religious and of high moral standing. d) the narrator desires to become a productive member of society.