Y=8x+168 find the x and y intercept

Which system of linear inequalities is graphed? can somebody pleasssse

In a column proof the right column states your reasons

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.