Please help, I don't understand what I'm supposed to do

Ok here is my answer.

Explanation:

Take 3 and turn it to the left, Take 1 and estimate about 10. Then Measure B with D and A. And You should get 15.

Hope this helps you out. ;)

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;