The equation for a circle is (x-h)^2 +(y-k)^2=r^2 You just have to plug in your coordinates h is the x and k is the y. The r is radius squared. so, (x-2)^2+(y-(-5)^2=144 You have to be careful of those tricky negative values. When you distribute the y-(-5) it turns into y+5. So your answer is D.
