Which of the following values could NOT be a probability

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 ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Negative 5 1/12 + negative 4 1/4 + 6 3/4

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?