I believe that it would be 13, unless you were trying to make the 9 negative. Hope that helps.
The domain is (1,3,5,7,9) and the range is (2,4,6,8,0)
Whats the choices?..............................................................................
A full circle in radians is 2π, and in degrees it's 360°. I want to convert the 72° to radians:
72° in radians = 72/360 * 2π = 2/5π
The circumference of a full circle is the number of radians times the radius. (ie., 2πr), so the JK part of the circle is:
5* 2/5π simplifies to 2π