Question

F(x)=25-x2, find the value of f(3)

Answer 1

f(3) = 16

Explanation:

To evaluate f(3), substitute x = 3 into f(x), that is

f(3) = 25 - 3² = 25 - 9 = 16

Answer 2

f(3) = 16

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Algebra I

• Function Notation

Explanation:

Step 1: Define

f(x) = 25 - x²

f(3) is x = 3

Step 2: Evaluate

1. Substitute in x: f(3) = 25 - 3²
2. Exponents: f(3) = 25 - 9
3. Subtract: f(3) = 16