What is the result of 72 divided by 12? 6 8 9 12

Factor the expression using gcf 9b+45

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

(fog)(x) if f(x)=x^2- 4 and g(x)=x^2 + 2 x, f(g(x))= f(x^2+2x) (x^2+2x)^2-4 (x^2+2x)(x^2+2x)-4 (x^4+2x^3+5x+4x^2)-4 x^4+2x^3+4x^2+5x-4 what am i doing wrong