Find f(g(x)) f(x)=8x , g(x)=x+8

$f (x) = 8 x$ , $g (x) = x + 8$

Step 1

Set up the composite result function.

$f (g (x))$

Step 2

Evaluate $f (x + 8)$ by substituting in the value of $g$ into $f$ .

$f (x + 8) = 8 (x + 8)$

Step 3

Apply the distributive property.

$f (x + 8) = 8 x + 8 \cdot 8$

Step 4

Multiply $8$ by $8$ .

$f (x + 8) = 8 x + 64$