Question

Given f(x) and g(x) below, find the value of f(2) and g(1). *

1 point
If f(x) = 4x + 1 and g(x) = x2 – 4, find the value of f(2) and g(1).

Answer 1

f(2) = 9

g(1) = -3

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) = 4x + 1

g(x) = x² - 4

f(2) is x= 2

g(1) is x = 1

Step 2: Evaluate

f(2)

1. Substitute: f(2) = 4(2) + 1
2. Multiply: f(2) = 8 + 1
3. Add: f(2) = 9

g(1)

1. Substitute: g(1) = 1² - 4
2. Exponents: g(1) = 1 - 4
3. Subtract: g(1) = -3