Finite Math Examples

$f (50) = 0.4 x^{2} - 36 x + 1000$

Step 1

Replace the variable $x$ with $50$ in the expression.

$f (50) = 0.4 {(50)}^{2} - 36 \cdot 50 + 1000$

Step 2

Simplify the result.

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Step 2.1

Simplify each term.

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Step 2.1.1

Raise $50$ to the power of $2$ .

$f (50) = 0.4 \cdot 2500 - 36 \cdot 50 + 1000$

Step 2.1.2

Multiply $0.4$ by $2500$ .

$f (50) = 1000 - 36 \cdot 50 + 1000$

Step 2.1.3

Multiply $- 36$ by $50$ .

$f (50) = 1000 - 1800 + 1000$

Step 2.2

Simplify by adding and subtracting.

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Step 2.2.1

Subtract $1800$ from $1000$ .

$f (50) = - 800 + 1000$

Step 2.2.2

Add $- 800$ and $1000$ .

$f (50) = 200$

Step 2.3

The final answer is $200$ .

$200$

Step 3