A function f(x) and interval [a, b] are given. Check if Rolle's Theorem can be applied to f on [a, b]. If so, find all values c in [a, b] such that f' (c) = 0. Note, if Rolle's Theorem does not apply, enter DNE for the c value. f(z) =- on [-5, -1] x2 + 6x +9 C = -3 (Separate multiple answers by commas.) Submit