Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Geometry</u>
Volume of a Cylinder Formula: 
- V is volume
- r is radius
- h is height
Step-by-step explanation:
<u>Step 1: Define</u>
Radius <em>r</em> = 2 ft
Height <em>h</em> = 7 ft
<u>Step 2: Solve for V</u>
- Substitute in variables [Volume of a Cylinder Formula]:

- [Volume] Evaluate exponents:

- [Volume] Multiply:

Subtract 9 from each side of the equation. so you would get 1<x. meaning that any number larger then 1 would correctly solve the equation.
Answer:
20
Step-by-step explanation:
make a # bar and market up as a percentage do 25%, 50%, 75% then you put 15 where 75% is and from there you see where the #'s fit
Answer:
a Hitachi 50 plasma tv at 495 per month for 6
Answer:
$14.40
Step-by-step explanation:
She spent 12 dollars and has 1/5 left.
This means $12 is 4/5 of her original money.
$12=4/5 of the original money
$12+ $[12•(4/5)]=4/5+ (1/5)
$12+$[2.4]=5/5
$14.4=5/5 of the original money
She originally had $14.40