7. Multiple Choice: Find the radius of convergence and th.. Question Find the radius of convergence and the interval of convergence of the power series (-1)( x - 3) Answer a R = 1, 1= [2, 4 ) b R= 1. 1 = (, 4] ( R= 3, I= [ - 3, 3) ( R=3. 1 = (~3, 3)