Question

Let f(x) = x^2+6 and g(x) = x+8/x . Find (g•f)(-7)

Answer 1

Answer:

63/55

Step-by-step explanation:

i took the exam

Answer 2

If:
x = - 7

We know that:
$f(x) = x^2 + 6$ → $f(-7) = (-7)^2 + 6 = 49 + 6 = 55$
$g(x) = \frac{x+8}{x}$ 

Soon:
$(gof)(f(-7)) = \frac{x+8}{x}$
$(gof)(55) = \frac{55+8}{55}$
$\boxed{\boxed{(gof)(55) = \frac{63}{55}}}\end{array}}\qquad\quad\checkmark$