The answer is <span>16x2 − 8x + 1
</span>
To be a perfect square trinomial, the rule must be used:
(a - b)² = a² - 2ab + b²
Let's check all choices
A. a = 7x, b = 4
(7x - 4)² = 49x² - 56x + 16
B. a = 2a, b = 5
(2a - 5)² = 4a² - 20a + 25
C. a = 5b, b = √10
(5b - √10)² = 25b² - 10√10 b + 10
D. a = 4x, b = 1
(4x - 1)² = 16x² - 8x + 1
CORRECT
        
                    
             
        
        
        
Given:
D=165 feet and the frequency of the motion is 1.6 revolutions per minute.
Solution:
The radius is half of the diameter.
The radius of the wheel is 82.5 feet.

As we know: 
Substitute the value of T in the above formula.

If the center of the wheel is at the origin then for  the rest position is
 the rest position is  .
.
This can be written as:
  
 
The actual height of the rider from the ground is:

The required equation is  .
.
 
        
             
        
        
        
From what I am looking at, it seems as if it is. :)
        
                    
             
        
        
        
20 nickels = 1 dollar
So, do 20 x 17.
20 x 17 = 340 nickels which is $17.
The answer is 340 nickels!