He didn't do it as rise over run, or y2-y1/x2-x1
He did it reverse, which is incorrect.
I would say 50 because 50 is between 40 and 60 50 is half of 100 so that is why I would say 50
Answer:
3
Step-by-step explanation:
Answer:
I'm not sure but I did do it on a calculator so 1.515-1.56= -0.045
