The equation of a circle is x squared + y squared -12y+ 20 = 0 . What are the
coordinates of the center and the
length of the radius of the circle?
1) center (0,6) and radius 4
2) center (0, -6) and radius 4
3) center (0,6) and radius 16
4) center (0, -6) and radius 16

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?