Question

F(x)=x^2+6 and G(x)=x+8\x find (g o f) (-7)
help pleaaaaase (:

Answer 1

first find
\[f(-7)\] do you know that one?

Answer 2

noo, well, i think sooo...i really don't quit understand this stuf :/ do i plug it in?1

Answer 3

yes, replace x by -7 in f(x)

Answer 4

\[F(-7)=(-7)^2+6=49+6=55\]

Answer 5

now to find
\[g(F(-7))=g(55)\] replace x by 55 in g(x)

Answer 6

soo i do 55 * -7?

Answer 7

it is not clear to me what g(x) is. did you write
\[g(x)=\frac{x+8}{x}\]?

Answer 8

yes

Answer 9

g(x) X+8 over x in fraction form