Consider the function f(x)=2x^(3) −6x^(2) −48x+7 By the Mean Value Theorem, we know there exists at least one value c in the open interval (−4,8) such that f′(c) is equal to this mean slope. List all values c that work.

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours