What’s the radius of each circle x^2+(y-3)^2=25

Radius = 5.

Step-by-step explanation:

Compare this with the following general form of a circle:

(x - h)^2 + (y - k)^2 = r^2

x^2        + (y - 3)^2  = 25

We see that the radius (r) =  sqrt 25 = 5.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.