Finite Math Examples

$f (19) = \sqrt{x - 3}$

Step 1

Replace the variable $x$ with $19$ in the expression.

$f (19) = \sqrt{(19) - 3}$

Step 2

Simplify the result.

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Step 2.1

Subtract $3$ from $19$ .

$f (19) = \sqrt{16}$

Step 2.2

Rewrite $16$ as $4^{2}$ .

$f (19) = \sqrt{4^{2}}$

Step 2.3

Pull terms out from under the radical, assuming positive real numbers.

$f (19) = 4$

Step 2.4

The final answer is $4$ .

$4$

Step 3