The number of animal species, $N$, of a certain body length as a function of the body length, $L$, is $\displaystyle N = \frac{A}{L^{2}}$.

(a) What is the exponent of this power function?
$p$ = help (numbers)

(b) Assuming the constant $A$ is positive, which graph A-D best matches the graph of this power function? ? A B C D