Answer
(a) $none$
(b) $none$.
(c) $5$.
(d) $y=3x^6$.
Work Step by Step
(a) Given $f(x)=3(x^2+8)^2(x^2+9)^2$, we can find zero(s) $none$ (multiplicity none).
(b) The graph touches or crosses the x-axis at $none$.
(c) The maximum number of turning points on the graph is $n-1=6-1=5$.
(d) The end behavior is similar to those of $y=3x^6$.
