Woops, I totally made a typo. Its supposed to be
a. find f(11), f(6), f(3), f(2), and f(0).
Does that change anything from f(3) on?
and what should f(3) be?
Also, I forgot to add one last question.
e. Set f(x)=f and solve for x. Show on your graph that one solution is valid and the other one is extraneous. (Plot 2 points showing one is on the graph and the other is not.)