Student 1 and 3.

Move the negative into the brackets,
positive becomes negative while two negatives make a positive.
Answer:
12 wins and 9 losses.
Step-by-step explanation:
Because they are winning 57.14% of there games so if 8 out of 14=57.14% then that means if they would have still one at the exact pace then.
12 wins out of 21 would mean they would have one 57.14% of there games.
Hope this helps have a great afternoon:)
Answer:
505
Step-by-step explanation:
sn=2a+(n-1)d
2*5+(100-1)5
10+(99)5
505