Question

2) f(x) =*
x + 3; find f(12)
I
I=

Answer 1

15

Explanation:

f(12) means substitute 12 in for x

So, f(12)= 12 + 3

12+3=15

15

Answer 2

f(12) = 15

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) = x + 3

f(12) is x = 12

Step 2: Evaluate

1. Substitute: f(12) = 12 + 3
2. Add: f(12) = 15