Elena starts to walk home from school, but has to turn around and go back because she left
something in her locker. On her way back home (the second time), she runs into her friend
who invites her to the library to do homework with her. She stays at the library and then
heads home to do her chores. Determine:
.
Which graph fits Elena's story.
.
What the two quantities are.
.
Which quantity is a function of which.