Precalculus Examples

$f (x) = 4 x + 2$ ; Find $f (8)$

Step 1

Replace the variable $x$ with $8$ in the expression.

$f (8) = 4 (8) + 2$

Step 2

Simplify $4 (8) + 2$ .

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Step 2.1

Remove parentheses.

$4 (8) + 2$

Step 2.2

Multiply $4$ by $8$ .

$32 + 2$

Step 2.3

Add $32$ and $2$ .

$34$