Pls help Im in class plsss

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

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

Solve -.016x= -16. need solving this