Suppose the probability of an event occurring is p(a), and the probability of the event not occurring is p(a'). if p(a) = m and p(a') = n, which of the following equations must be true?
a. m = 1 + n
b. n = 1 - m
c. n = m + 1
d. m =n -1

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.