Looks like all you have to do is to translate this expression into symbols:
2.1*10^9
The equation of a circle uses the following formula:
The center of the circle is given by (h,k). Therefore, h = -2, and k = -5. r = 1, so we can find the equation from the information given to us.
Plug in your values.
The equation of this circle is as follows:
Answer:
the vertex is (-4,2)
Step-by-step explanation: