Question

Find the value of f(3) for the function.
f(a)=5(a+4)- 9

Answer 1

f(3) = 26

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(a) = 5(a + 4) - 9

f(3) is x = 3

Step 2: Evaluate

1. Substitute: f(3) = 5(3 + 4) - 9
2. Add: f(3) = 5(7) - 9
3. Multiply: f(3) = 35 - 9
4. Subtract: f(3) = 26