Answer: Horizontal asymptote is
and vertical asymptotes are 
Step-by-step explanation:
Since we have given that

We need to find the horizontal and vertical asymptotes.
Since vertical asymptotes will occur where the denominator becomes zero.
So, here denominator is 
Now,

And the horizontal asympototes will occur when the coefficient of higher degree of numerator is divided by coefficient of higher degree of denominator.

Hence, horizontal asymptote is
and vertical asymptotes are 
The answer is -21.4
Hope that answers your question ;)
The correct answer to your question is 252 children
Out of 12 rolls the tail appeared 8 times
So this experimental probability =8/12 = 2/3 (answer c)