PLEASE HELP Will be marking Brianliest

The perimeter of a square is80-64y units. which expression can be used to show the side length of one side of the square?

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

What is the value of f(x) = 2.2 for f(-2)?