Please help i really need it

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

Which function has the domain x> -11

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?