Let $f(x)=x^2+5$ and $g(x)= (x+5)/x$ . What is $(g*f)(-3)$ ?

Question

A) 1/4
B) 14/19
C) 19/14
D) 49/9

10720 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-07-30T10:54:39

$19/14to(C)$

$(g@f)(x)=g(f(x))$

$=(x^2+5+5)/(x^2+5)=(x^2+10)/(x^2+5)$

$(g@f)(-3)=((-3)^2+10)/((-3)^2+5)=19/14to(C)$