Question

Sendo F(x) = x + 5 e g(x) = 1+3x. Determine f(g(5) = ?

Answer 1

g(2)=1-3.2=1-6=-5
f(g(2))=f(5)=-5+5=0
f(-1)=-1+5=4
g(f(-1))=g(4)=1-3.4=1-12=-11