Solve for x. please help as fast as possible

What is a possible solutions of the x> 3?

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

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.