Please help guys I forgot who you do this?

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.

Which number line correctly shows 0.8 + 0.3?

Solve for the equation x. 2x + 22 = 4(x + 3)