The moon's mass is 7. 4×1022kg and it orbits 3. 8×108m from the earth with a period of 27. 3 days.

40 minutes to complete the english test

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

The answer should be d if i’m wrong i’ll change my answer and fix it for you