Because of the symmetry of the parabola, its stationary point will always be in the middle of its x-intercepts (or zeroes). ... 
        
             
        
        
        
(if the last five is an exponent, here is the answer)
5 • 10^5
first work on the exponent
5 • 100,000
multiply
500,000
        
             
        
        
        
Answer:
25 rounds
Step-by-step explanation:
Let
x -----> the number of rounds of golf
y ---> total charges to play 
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate
b is the y-intercept or initial value
<em>Membership</em>
 ----> equation A
 ----> equation A
The slope is  m=$35 per round
The y-intercept b=$500 (annual membership fee)
<em>Non-Membership</em>
 ----> equation B
 ----> equation B
The slope is  m=$55 per round
The y-intercept b=$0 
Equate equation A and equation B

solve for x



For x=25 rounds the cost to be the same with and without a membership
 
        
                    
             
        
        
        
A)Add 3 and the continue to add 2 more to three each time to get the next number
B)add 1 and add one to the number one each time to get the the next number