PLEASE HELP MY TEST TOMORROW

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

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.

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers