Which expression has been simplified correctly? Show work.
(-3g)^4=-81g^4
(w^3x^2y^2)(w^2x^3y)=w^5x^5y^3
12y^6
------- = 3y^3
4y^2
(a^3b^5)^2 = a^5b^7
(-3g)^4=-81g^4
(w^3x^2y^2)(w^2x^3y)=w^5x^5y^3
12y^6
------- = 3y^3
4y^2
(a^3b^5)^2 = a^5b^7