Question

f(x) = 4x - 5 g(x) = 1/4x + 5/4 Find (fog)(x) Find (fog)(x)

Answer 1

you must replace the value of G in x of the function F

we look for fog

$\begin{gathered} (fog)(x)=4(\frac{1}{4}x+\frac{5}{4})-5 \\ =(x+5)-5 \\ =x \end{gathered}$

fog(x)=x