Consider the function f(x) with the following table of values: x -21 4 7 10 f(x) 3.1 5.8 9.3 14.7 11.2 In each of the following questions, enter numbers only rounded to 2 decimal places if needed. If an answer is negative, don't forget to include a negative symbol in front of the number! (a) Estimate f' (-2): (b) Estimate the slope of the tangent line at x = 4