What value does the 2 represent in the number 168,526

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Which number produces a rationale number when multiplied by 1/5

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.