Determine the average rate at which the quadratic function y = .028 t² + -1.1 t + 68 changes between clock times t = 9.2 and t = 9.2 + .1 sec; between clock times t = 9.2 and t = 9.2 + .01 sec; and between clock times t = 9.2 and t = 9.2 + .001 sec. At what rate do you conjecture this function will be changing at the instant t = 9.2 sec?