Question

Given j(x) = x + 5, what is the value of j(12)?

Answer 1

So to show work you’d replace x and j(x) with 12:
j(12)=12+5
j(12)=17
(12,17)

Answer 2

j(12) = 17

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

j(x) = x + 5

j(12) is x = 12

Step 2: Evaluate

1. Substitute in x: j(12) = 12 + 5
2. Add: j(12) = 17