Calculate f(-2), state the domain and simplify f(a+7). Show work

3+3 tu-trcr) = (b a): (a) {:31th f{-2). {wark optional) 3+3 (33112 (c) Find f1}: + '3") and simplify as much as possible. Show wark. (b) State the damain aftha mctiun f{x) =