Answer:
a = sqrt( 3x+1)
Step-by-step explanation:
f(x) = sqrt(x-1)
g(x) = 3x+2
(f°g)(x) means replace g(x) in f(x) every place you see an x
(f°g)(x) = sqrt( g(x) -1)
= sqrt( 3x+2 -1)
Simplifying
=sqrt( 3x+1)
