Determine the average rate at which the quadratic function y = .022 t² + -2.2 t + 91 changes between clock times t = 28.4 and t = 28.4 + .1 sec; between clock times t = 28.4 and t = 28.4 + .01 sec; and between clock times t = 28.4 and t = 28.4 + .001 sec. At what rate do you conjecture this function will be changing at the instant t = 28.4 sec?