Find the radius of convergence for ∑n=0∞xn5n\sum_{n=0}^{\infty} \frac{x^n}{5^n}∑n=0∞5nxn.
R=1R = 1R=1
R=5R = 5R=5
R=1/5R = 1/5R=1/5
R=25R = 25R=25