Question 725400
The moon Phobos orbits 24 times in eight days. Well first you would need to figure out how many times it orbits in 1 day. To do that I would divide 24 by 8 to get 3. Now since we know that it orbits 3 times a day we can times that by 7 because you wanna know how many times it orbits in 7 days. 7x3 is 21. Your answer would be 21. 
Hope this helps.