Step-by-step explanation:
A counterclockwise rotation about the origin by 90 degrees rule is:

The reflection about the x-axis is:

If we take for example point P (-3, -2) we can see it ends at P'(2,3). The counterclockwise rotation about the origin by 90º gives:

And now with a reflection about the x-axis:

Which is point P'
Answer:
Counterclockwise rotation about the origin by 90 degrees followed by reflection about the x-axis