i need help with these

SHORT ANSWER. Show all work to receive partial credit. 15) State the hypotheses and conclusion of Rolle's Theorem. Give an example of a function that satisfies these hypotheses. MULTIPLE CHOICE. Choose the one alternative that best answers the question. Find the largest open interval where the function is changing as requested. 16) Decreasing f(x) = - ~x + 3 A) (-3, Do) B) (-00, -3) C) (3, 20) D) (-00, 3)