If a + b + c = -2 and x + y = 10,
what is -9a + 2x - 9b - 9c + 2y?

Ihonestly have no clue if it's each or none.

Use sigma notation to represent the following series for 9 terms.

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.