I believe it would be the last choice because in order for something to be a function, the domain (x values) cannot repeat. If you take a look, the value 3 is repeated in (3,1) and (3,2)
Left at 12 p.m. traveled 3 hrs and 5 min.....now it is 3:05 p.m. stopped for fuel, 10 minutes....now it is 3:15 p.m. drove for 1 hr and 20 min.....now its 4:35 p.m
