A radio stations call letters consisting of four letters beginning with a K or a W. How many different radio stations call letters are possible if letters can't be repeated? How many different radio stations call letters are possible if letters can be repeated?

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.