Answer:
Step-by-step explanation:
D is the answer. "The set of all points" represents the outside of the circle. Because they are all a certain distance from a single point, they are all equidistant from that point, which forms a circle.
the awnser would be a(g(x)=3x2
90%
90 + 10 is 100 total
90/100 is just 90%