What is a number that is that number times any whole number called

I think it's called an Integer?

(c, 0) i might be wrong so don't put full faith on my answer

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.