I have this equation,

3x^2-16x-12 / x+5

I have to find all of the Asymptotes, Since the numerator is larger then the denominator I know that I need to use long division. I also assume since the Denominator is larger I have a OA instead of an HA. When I graph this function it looks similar to a typical transformed X^2 function. After doing the long division I got OA of 3x-31. Does this need to be simplified more? Also, am I thinking of this problem correctly?