Six workers can do 9 identical jobs in 3 days. how long will it take 4 workers to do 10 such jobs
a) 3 days
b) 4 days
c) 5 days
d) 6 days
e) more than 6 days
i guess it's ans is d.

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)