28. Determine the average rate of change of the function over the domain graphed. (2 marks) (- 3, 5). (3, 5) 4 2 -4 4 x 29. Determine the average rate of change of the function over the domain graphed. (2 marks) 2 (2, 0) -4 2 0 2 4 x -2 (-3, -5) - 4 30. Given g(x) = 4x2 + 1, use the difference quotient to find the instantaneous rate of change when x = 3. (4 marks)