Step-by-step explanation: You have to pick 2 points on the graph.
For example in the h part let’s say you picked 2 and 3 and for the M(h) you chose 60 and 50 so now, you minus 3 and 2
3-2=1 and you get one.
then you minus 60 and 50
60-50 which gives you 10.
divide those two given numbers now,
10 divided by 1 =‘s 10
The answer is 10 :) So.. I’m guessing it would be 10 magazines per hour. if not then it’s the other one ❤️