Question

Sejam f(x)=2x-3 e f[g(x)]=4+x então g(x) vale:
a= x-7
b= x=7
c= 3x=1
d- x+7 / dividido por 2
e= x-7 / dividido por 2

Answer 1

$f(x)=2x-3\\\\f(g(x))=2\cdot\,g(x)-3\\\\4+x=2\cdot\,g(x)-3\\\\2\cdot\,g(x)=4+x+3\\\\\boxed{g(x)=\frac{7+x}{2}}$