Fill in the next number in this pattern.

1, 9, 25, 49

What is the product? a-3/15a × 5/a-3

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.

How can constraints be used to model a real-world situation?