Answer:
   
Step-by-step explanation:
The generating function a(x) produces a power series ...
   
where the coefficients are the elements of the given sequence.
We observe that the given sequence has the recurrence relation ...
   
This can be rearranged to ...
   
We can formulate this in terms of a(x) as follows, then solve for a(x).

The generating function is ...
   a(x) = 1/(1+2x)
 
        
                    
             
        
        
        
You need to know 20% of $5000.  "Of" means "times".  
$5000 x 0.20 (which is 20% written as a decimal)
=$1000 profit she wants to make
$5000 (original price) + $1000 (profit) = $6000 (sale price)
        
                    
             
        
        
        
Answer:
x=-1 y=4                                (-1,4)
Step-by-step explanation:
 
        
                    
             
        
        
        
Ist amount paid = $1500
Making $350 for 10 months = 10*350 = $3500
Total amount paid  = 1500 + 3500 = 5000
So an amount of $5000 was paid to cover the cost of $4500 within the ten month period.
I = PRT
Interest, I = 5000 - 4500 = 500Time, t = 10 months = 10/12 = (5/6) year.Principal P = 4500
R = I /(PT)  R = 500 / (4500*5/6)
R = (500*6) / (4500*5)
R = 0.1333..
R ≈ 13.33 %  per annum.