Can you solve these mean value Theorem problems. Can you also show work. Thanks

1.) f(x) =4x-x2 on [0, 4] 2.) f(x)=x2 -11x+30 on [5,6] 3.) f(x) =(x-2)(x-3)(x-4) on [ 2, 4] 4.) f (x ) = (x+4)2 (x-3) on [-4, 3]