Answer
a) The function increases indefinitely when $q$ decreases (without bound) and the function decreases indefinitely when $q$ increases (without bound)
b) $\lim\limits_{q \to -\infty}C(q)=+\infty$ and $\lim\limits_{q \to +\infty}C(q)=-\infty$
c) There isn't any horizontal asymptote.
Work Step by Step
Answer given by direct observation of the graph.
