How do i find out if these converge/diverge:

inifinity

SIGMA sqrt(2n+1)/(n^2)

n=1

infinity

SIGMA (3^K+K)/(K!)

k=1

I dont know what K! is and i dont know what to do with the square root. It stumps me and I dont know what theorems to use. The integral test? Bounded sum test? p-series test?