Question

Math problem please help

Answer 1

`\displaystyle -2`

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:
  `\displaystyle (f(b) - f(a))/(b - a)`

Explanation:

Step 1: Define

a = 4

b = 8

f(4) = -1

f(8) = -9

Step 2: Find Average Rate

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