I'm confused about these problems :(

Answer these questions showing your work plz

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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.