please answer the following showing all working out:

12. Consider the function f(a:) = 0.09934 2.173x3 + 17.027222 55.023m + 72.133. (a) (2 points) Find the inection point of f (as) on the interval 3 S x S 6. Give both X and y coordinates with all decimal places. (b) (3 points) Sketch the graph of f (as) over the interval 3 S :L' S 6. Label the inection point of f (x) in your sketch. Give the Window you use. Xmin = ,Xmaas= , min=g max=