Evaluate the Function f(x)=3x+8 at x=4

$f (x) = 3 x + 8$ at $x = 4$

Step 1

Replace the variable $x$ with $4$ in the expression.

$f (4) = 3 (4) + 8$

Step 2

Simplify the result.

Multiply $3$ by $4$ .

$f (4) = 12 + 8$

Add $12$ and $8$ .

$f (4) = 20$

The final answer is $20$ .

$20$

Step 3