Urgent rn, i really need pls: in what ways can vertical, horizontal, and oblique asymtotes be identified, just tell me how. pls include examples

Is a positive integer raised to a negative power always positive

What is coefficient of the term of degree of degree 5 in the polynomial below

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.