Question

Find the requested function and state the domain. (fog )(x) for f(x)=7x-8 and g(x)=8x+7

Answer 1

f(g(x)) = f(8x + 7)

= 7(8x + 7) - 8

= 56x + 49 - 8

= 56x + 41

The domain is all real numbers.