Evaluate the function f(x) = x2 + 5x 4 at the given values of the independent variable and simplify. a. f(1) b. f(x+3) c. f(-x) <:> a. f(1)= 2 (Simplify your answer.) b. f(x + 3) = D (Simplify your answer.) The domain of the piecewise function is (- 00,00). 3. Graph the function. f(x) = _ b. Use your graph to determine the function's range. 3 If x> 0 3. Choose the correct graph below. b. Select the correct choice below and ll in the answer box(es) to complete your choice. 0 A- The range does not have any isolated values. It can be described by E. (Type your answer in interval notation.) O B- The range has at least one isolated value. It can be described as the union of the interval(s) D and the set E. (Type your answer in interval notation. Use a comma to separate answers as needed.) 0 C. The range consists exclusively of one or more isolated values. It can be described as U. (Use a comma to separate answers as needed.) For the functions f(x) = 2 -x and g(x) =x2+ 8x -20, find f+ g, f-g, fg, and -. Determine the domain for each function. . . . (f + g)(x) = (Simplify your answer.)f Find f + g, f - 9, f9 and 6. Determine the domain for each function. 4x+3 3x5 f(X)= 2 ,gtx)= 2 x -64 x -64 (f+ g)(x) = D (Simplify your answer.)