The graph represents a polynomial function of degree 6.
a. How many positive real zeros does the function have? negative real zeros? imaginary zeros?
The function has __ positive real zero(s), __ negative real zero(s), and __ imaginary zero(s).
Or, the function has __ positive real zero(s), __ negative real zero(s), and __ imaginary zero(s).
b. Use Descartes’s Rule of Signs and your answers in part (a) to describe the possible sign changes in the coefficients of f(x).
f(x) could change signs __ times or __ times.