Respuesta :

Space

Answer:

[tex]\displaystyle -2[/tex]

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

  • Average Rate of Change: [tex]\displaystyle \frac{f(b) - f(a)}{b - a}[/tex]

Step-by-step explanation:

Step 1: Define

a = 4

b = 8

f(4) = -1

f(8) = -9

Step 2: Find Average Rate

  1. Substitute [ARC]:                    [tex]\displaystyle \frac{f(8) - f(4)}{8 - 4}[/tex]
  2. Substitute:                              [tex]\displaystyle \frac{-9 + 1}{8 - 4}[/tex]
  3. [Frac] Add/Subtract:              [tex]\displaystyle \frac{-8}{4}[/tex]
  4. [Frac] Divide:                         [tex]\displaystyle -2[/tex]

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