If Z=aX+bZ = aX + bZ=aX+b, what is Var(Z)Var(Z)Var(Z) in terms of Var(X)Var(X)Var(X)?
aVar(X)+baVar(X) + baVar(X)+b
a2Var(X)a^2Var(X)a2Var(X)
a2Var(X)+ba^2Var(X) + ba2Var(X)+b
aVar(X)aVar(X)aVar(X)