Kemen leaves home at 09:00 and drives at a speed of 20 km/h. After hour he increases his speed to 45 km/h and continues at this speed until 10:45.
He stops from 10:45 until 11:30 and then returns home at a speed of 50 km.

answer: hey there,

the answer you are looking for is a..

hope this you!

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)

any of them that add up to 180 degrees.