What is the constant rate of change shown in the graph below?​

Can someone me out here and the tell me the greatest common factor

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

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.