Need help with the 4 numbers : 25;26;27;28

Thinking (11 marks) 25. Determine the average rate of change of f(x) = x - x over the interval 1 S x $ 3. (3 marks) 26. Determine the average rate of change of the function over the domain graphed. (2 marks) 6 (2, 6) N (-1, 0) -4 -2 0 2 -2 27. Determine the average rate of change of the function over the domain graphed. (2 marks) ( - 3, 5). . (3, 5) 2 -4 0 28. Given g(x) = 3x* + 1, use the difference quotient to find the instantaneous rate of change when x = 2. (4 marks)