13. [I4 Points] DETAILS SCALC8 3.2.009. MY NOTES ASK' Consider the following function. f(x) = 9 x2/3 Find f(27) and f(27). f(27) = f(27) Find all values c in (27, 27) such that f'(c) = 0. (Enter your answers as a commaseparated list. If an answer does not exist, enter DNE.) c: 5. [1/4 Points] DETAILS PREVIOUS ANSWERS SCALC8 2.9.005. Find the linear approximation of the function f(x) = V 1 - x at a = 0. L ( X ) = Use L(x) to approximate the numbers v 0.9 and v 0.99. (Round your answers to four decimal places.) /0.9 ~ 0.99 ~