For the functions f(x) =5 -x and g(x) = x + 2x -35, find f + g, f - g, fg, and -. Determine the domain for each function. (f + g)(x) = (Simplify your answer.) What is the domain of f + g? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The domain of f + g is (Use a comma to separate answers as needed.) O B. The domain of f + g is (Type your answer in interval notation.) O C. The domain of f + g is O. / Simplify uni ir anewor Next