Astatistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0and 55.0 minutes. find the probability that a given class period runs less than 51.25 minutes.

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.