Which function represents the perimeter PPP of a square with side length sss?
P(s)=s2P(s) = s^2P(s)=s2
P(s)=4sP(s) = 4sP(s)=4s
P(s)=2sP(s) = 2sP(s)=2s
P(s)=s+4P(s) = s+4P(s)=s+4