Question

4) Given that


`f(x) = √(x)`

g(x) = x - 7. Then (fog)(x)

(a)

`√(x + 7)`

(b)

`√(x - 7)`

(c)

`√(x) - 7`


(d)

`√(x) + 7`

(e) none​

Answer 1

The answer is option B.

Explanation:

f(x) = √x

g(x) = x - 7

To find f o g(x) replace every x in f (x) by

g(x)

That's

`f \: o \: g \: (x) = √(x - 7)`

Hope this helps you