PLS ANSWE PLS NEED HELP ASAP

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left

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.

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.