Find r(s(x)) r(x)=x+3 ; s(x)=4x+3

$r (x) = x + 3$ ; $s (x) = 4 x + 3$

Step 1

Set up the composite result function.

$r (s (x))$

Step 2

Evaluate $r (4 x + 3)$ by substituting in the value of $s$ into $r$ .

$r (4 x + 3) = (4 x + 3) + 3$

Step 3

Add $3$ and $3$ .

$r (4 x + 3) = 4 x + 6$