M is the midpoint of jk, jm = 7x − 32 and mk = 89 − 4x.  if m is the midpoint of jk, what is the distance of mk?

a 45

b 11

c 13

d90

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.