Answer:
64*(1/4)^x
Step-by-step explanation:
64 is the starting number because it is given, and x represents how many rounds there are. 1/4 represents how much of the teams remain after each round.
 
        
             
        
        
        
Answer:
A ≈ $500
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
<u>Algebra I</u>
Compounded Interest Rate: A = P(1 + r/n)ⁿˣ
- A is final amount
- P is initial (principle) amount
- r is rate
- n is number of compounds
- x is number of years
Step-by-step explanation:
<u>Step 1: Define</u>
P = 230
r = 0.063
n = 365
x = 12
<u>Step 2: Solve for </u><em><u>A</u></em>
- Substitute:                    A = 230(1 + 0.063/365)³⁶⁵⁽¹²⁾
- Divide:                          A = 230(1 + 0.000173)³⁶⁵⁽¹²⁾
- Multiply:                        A = 230(1 + 0.000173)⁴³⁸⁰
- Add:                              A = 230(1.00017)⁴³⁸⁰
- Exponents:                   A = 230(2.1296)
- Multiply:                        A = 489.808
 
        
                    
             
        
        
        
Answer: 6 large frames and 12 small frames
Step-by-step explanation:
We define the following:
x = number of large frames
y =  number of small frames
Make the following equations:
x + y = 18
19x + 9y = 222
Use system of equations to solve. We find the value of x first. 
y = 18 - x
⇒ 19x + 9(18 - x) = 222
⇒ 19x + 162 - 9x = 222
⇒ 10x + 162 = 222
⇒ 10x = 60
⇒ x = 6
Find value of y: 
6 + y = 18
y = 12
∴ 6 large frames and 12 small frames were purchased. 
 
        
             
        
        
        
Area is found by taking the length time width or A=lw
240=L x 15    divide both sides by 15
Length = 16 meters
        
             
        
        
        
Answer:
90%=9/10=0.9
0.9=90%=9/10
900%=900/1000=0.9
9/10%=0.9=90%
Step-by-step explanation: