Answer:
All of the above is correct
Explanation:
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Coordinates (x, y)
- Slope Formula:

Explanation:
<u>Step 1: Define</u>
Point (0, -7)
Point (7, 0)
<u>Step 2: Find slope </u><em><u>m</u></em>
Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>
- Substitute in points [Slope Formula]:

- [Fraction] Add/Subtract:

- [Fraction] Divide:

Answer:
A portion of the Earth's atmosphere that protects the Earth from radiation
Replication Fork! Is the answer! Hope this helps!
true? i dont understand what you are asking?......