a) a(x) = 3x +7 b) b(x) = x2 - 20x c) c(x) = 20 d) d(x) = x2+20 1 1 e) e(x) = (x-2) (x+7) V3x+6 f) f(x) =1+x - 1 x Plot each function on a separate x-y coordinate system. a) Based on the plots above, estimate the domain and range and state the result using interval notation. (Hint: You may have to change the interval values in the plot command to see a complete graph.) b) Identify the type of function for each of the above functions, i.e. rational, exponential, etc ? c) In general, what can you say about the domain for each type of functions