Which equations does the entire model represent? Choose ALL that are correct. Please help me!!

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

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.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.