This is a calculus question. Make sure to solve all questions showing all steps and explanations below. The function is above as you can see. Please help me with this. Thank you so much

f ( x ) = 5x +9x49 3x +6x+8 9. Determine the intervals of increase and decrease for your function and state the co-ordinates of any local maxima or minima. Determine f"(x) for your function and simplify the equation as much as possible. Make sure your derivative is expressed with positive exponents. Determine all x-values where f"(x) = 0 or where f"(x) is undefined. If your equation cannot be solved algebraically, use technology to solve and make sure to indicate why it was necessary to do so. Determine the intervals of concavity for your function and state the co-ordinates of any points of inflection