How can you isolate the variable in the inequality 3b< -99

What is the value of x in the this question ?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

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.