write an equation of the circle with the given center and radius
(-9,3) r=5
we know that
the equation of the circle in center radius form is equal to
(x-h)^2+(y-k)^2=r^2
where (h,k) is the center and r is the radius
substitute the given values
(x+9)^2+(y-3)^2=5^2
(x+9)^2+(y-3)^2=25