The power 9 squared is equivalent to 81. What is the value of 9 Superscript negative 2?

The equation respenting the left table is

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Plz hurry evaluate the expression a+b where a=8 and b=19