It looks like we're given
[tex]\displaystyle \lim_{x\to c} f(x) = -4[/tex]
[tex]\displaystyle \lim_{x\to c} g(x) = \frac15[/tex]
Since the limit of f(x) is finite and non-zero, we have by the quotient rule for limits
[tex]\displaystyle \lim_{x\to c}\frac{g(x)}{f(x)} = \frac{\displaystyle \lim_{x\to c}g(x)}{\displaystyle \lim_{x\to c} f(x)} = \frac{-4}{\frac15} = \boxed{-20}[/tex]
