Question

Given d(x) = 5x - 12, what is the value of d(-4)?
-32
0-3
0-12
3

Answer 1

d(-4) = -32

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

d(x) = 5x - 12

d(-4) is x = -4

Step 2: Evaluate

1. Substitute in x: d(-4) = 5(-4) - 12
2. Multiply: d(-4) = -20 - 12
3. Subtract: d(-4) = -32