Respuesta :

Space

Answer:

f(-121) = -5

f(31) = 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

Step-by-step explanation:

Step 1: Define

f(x) = ∛(x - 4)

f(-121) is x = -121

f(31) is x = 31

Step 2: Evaluate

f(-121)

  1. Substitute in x:                    f(-121) = ∛(-121 - 4)
  2. [Radical] Subtract:               f(-121) = ∛(-125)
  3. [Radical] Evaluate:              f(-121) = -5

f(31)

  1. Substitute in x:                    f(31) = ∛(31 - 4)
  2. [Radical] Subtract:               f(31) = ∛27
  3. [Radical] Evaluate:              f(31) = 3

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