Question

F(x) = 4/5x - 2
Find f(3)
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Answer 1

Answer: 2/5

Explanation:

We need to replace x with 3

f(x)= 4/5*(3)-2= (12/5)-2=(12-10)/5= 2/5

Answer 2

f(3) = 2/5

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

f(x) = 4/5x - 2

f(3) is x = 3

Step 2: Evaluate

1. Substitute: f(3) = 4/5(3) - 2
2. Multiply: f(3) = 12/5 - 2
3. Subtract: f(3) = 2/5