How do i graph a rational function with a y intercept. example 3x^2-1/2x+4 +1

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

If i have 20$ and i gave 5$ away how much i got

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?