Question 907200
Although is was not complete, a sufficient response was already given:


<a href="http://www.algebra.com/algebra/homework/Functions/Functions.faq.question.906687.html">http://www.algebra.com/algebra/homework/Functions/Functions.faq.question.906687.html</a>


For part (b), that would simply be the standard model cubic function shifted downward by 8 units.  Instead of the inflection point at (0,0), the inflection point moves to  (0,-8).


Part (b) graph:
{{{graph(300,300,-10,10,-12,8,x^3-8)}}}