Let f(x): = x-16 X+4 (a) Calculate f(x) for each value of x in the following table. - 3.9 - 3.99 - 3.999 f(x) = X x-16 X+4 (a) Calculate f(x) for each value of x in the following table. (b) Make a conjecture about the value of lim X-4 X - 4.1 - 4.01 - 4.001 - 3.9999 - 4.0001 -16 f(x) = X+4 (Type an integer or decimal rounded to four decimal places as needed.) x-16 X+4