Question

Let f(x)=3x2+2x−3. What is f(3)?

Answer 1

Answer:

f(3) = 30

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

Step-by-step explanation:

Step 1: Define

f(x) = 3x² + 2x - 3

f(3) is x = 3

Step 2: Evaluate

1. Substitute in x:                    f(3) = 3(3)² + 2(3) - 3
2. Exponents:                          f(3) = 3(9) + 2(3) - 3
3. Multiply:                               f(3) = 27 + 6 - 3
4. Add:                                     f(3) = 33 - 3
5. Subtract:                              f(3) = 30