Answer Happy

19-29 Find the derivative of the function using the definition of derivative. State the domain of the function and the domain of its derivative. 19. }(x) = x - 21. f(t) = 5t - 912 23. f(x) = x² – 2x - 20. f(x) = mx + b b 22. f(x) = 1.5x2 - x + 3.7 24. f(x) = ? + V