Maryam realizes that when she ascends the stairs of the school in threes or fours, one step always remains. Then what is the minimum number of the stairs between 13,14,23,26 and 31? and why?

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.