Question

If f(x) = 4x + 5, what is the value of f(-3)?

1. -2
2.4
3. -7
4. 17
Please help me

Answer 1

3. -7

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

• Functions
• Function Notation

Explanation:

Step 1: Define

Identify

f(x) = 4x + 5

f(-3) is x = -3 for f(x)

Step 2: Evaluate

1. Substitute in x [Function f(x)]: f(-3) = 4(-3) + 5
2. Multiply: f(-3) = -12 + 5
3. Add: f(-3) = -7