Question

If g(x) = 2 |x| − 1, what is g(−2.3)?

Answer 1

3.6
2 *| -2.3 | - 1 = 3.6

Answer 2

g(-2.3) = 3.6

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

g(x) = 2|x| - 1

Step 2: Evaluate

1. Substitute in x [Function g(x)]: g(-2.3) = 2|-2.3| - 1
2. Absolute values: g(-2.3) = 2(2.3) - 1
3. Multiply: g(-2.3) = 4.6 - 1
4. Subtract: g(-2.3) = 3.6