Question

Find f(-3) for f(x) = 4(2)^x

O A. -32

O B. 1/2

O C. -24

O D. 1/8

Answer 1

B. 1/2

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) = 4(2)ˣ

Step 2: Evaluate

1. Substitute in x [Function f(x)]: f(-3) = 4(2)⁻³
2. Exponents: f(-3) = 4(1/8)
3. Multiply: f(-3) = 1/2