Answer this you'll get brainliest. : )

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.

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)