Find f ∘ g ∘ h. f(x) = x − 7, g(x) = : √x , h(x) = x − 7

Question

Need help finding answer!

Answer 1

f(3) = 3 - 7 = -4, right?

 

Work from the inside.

 

g(h(x)) = √(x - 7)

 

f(g(x))) = √(x - 7) - 7

 

That's it. You can't combine what's under the radical with what's not, so it's not x - 14.