Question

If f(x) = 2x – 8 and g(x) = √x-5
what is (fºg)(30)?

Answer 1

2.

Explanation:

(f o g)(x) = 2(√(x-5)) - 8

So (f o g)(30) = 2 √(30-5) - 8

= 2 * √25 - 8

= 2* 5 - 8

= 2.