Please do this for me try to use a formula that is commonly used in grade 12 advance functions do not be to advanced with formula use do something that is commonly used by teachers in my grade 12 unit 1 advance functions

4. Given the graph of a polynomial function below, fill in the blank. [5] 20- a) Number of turning points: b) Least possible degree of polynomial: 10- c) Intervals where f (x) 2 0 ( in interval notation ) -4 -2 2 4 d) Intervals where f (x)