The current sales S (in hundreds of dollars) at the Jenck Auto Supply are related to an ongoing advertising campaign expenses x (in hundreds of dollars) according to

$\displaystyle {S}{\left({x}\right)}=\frac{{{180}{x}}}{{{x}+{15}}}$

where x is the number of units sold

$\displaystyle \lim_{{{x}\rightarrow{37}}}{P}{\left({x}\right)}=$ hundred dollars

If needed round to 4 decimal places