For the function f(x)=x9 - 8x + 8x - 7, state:a) the maximum number of real zeros that the function can have;b) the maximum number

For the function f(x)=x9 - 8x³ + 8x - 7, state:a) the maximum number of real zeros that the function can have;b) the maximum number of x-intercepts that the graph of the function can have; andc) the maximum number of turning points that the graph of the function can have.