Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Coordinate Planes
<u>Algebra II</u>
Distance Formula: 
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify.</em>
Point (2, 2)
Point (7, 7)
<u>Step 2: Find distance </u><u><em>d</em></u>
Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>.
- Substitute in points [Distance Formula]:

- [Order of Operations] Evaluate:

Answer:
444.36
Step-by-step explanation:
It would be the third one 7n=10-3n
Answer: six
Step-by-step explanation:
When 1-5x>0, 1> 5x, x< 1/5, then |1-5x|=1-5x
6(1-5x)-9=57
6-6*5x-9=57
-30x-3=57
-30x=57+3
-30x=60
x=-60/30
x=-2 is a solution because -2<1/5