K Given the function f(x) = 3x + 3, complete parts a through c. 1 (a) Find an equation for f '(x). (b) Graph f and f in the same rectangular coordinate system. (c) Use interval notation to give the domain and the range of f and f 1. (Hint: To solve for a variable involving an nth root, raise both sides of the equation to the nth power, (y)" = y.) This ques