Finite Math Examples

$f (x) = 7 - 5 x$ , $f (4)$

Step 1

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

$f (4) = 7 - 5 \cdot 4$

Step 2

Simplify $7 - 5 \cdot 4$ .

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Step 2.1

Remove parentheses.

$7 - 5 \cdot 4$

Step 2.2

Multiply $- 5$ by $4$ .

$7 - 20$

Step 2.3

Subtract $20$ from $7$ .

$- 13$