I need help please help me

What is the vertical asymptotes of the function f(x)=x-2/x*2-3x-4

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g