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F(x) = 4x -1 find f(-2)
g(x) = 3x^2 - 2 find g(6)

User Billboard
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1 Answer

4 votes

Answer:

f(-2) = -9

g(6) = 106

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) = 4x - 1

f(-2) is x = -2 for function f(x)

g(x) = 3x² - 2

g(6) is x = 6 for function g(x)

Step 2: Evaluate

f(-2)

  1. Substitute in x [Function f(x)]: f(-2) = 4(-2) - 1
  2. Multiply: f(-2) = -8 - 1
  3. Subtract: f(-2) = -9

g(6)

  1. Substitute in x [Function g(x)]: g(6) = 3(6)² - 2
  2. Exponents: g(6) = 3(36) - 2
  3. Multiply: g(6) = 108 - 2
  4. Subtract: g(6) = 106
User Anijhaw
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