Answer:
the answer we think is going to be 57 maybe
 
        
             
        
        
        
Answer:
30 x 30x 9 = 8,100 that is the answer have a great day
 
        
                    
             
        
        
        
Answer:
41
Step-by-step explanation:
yellow marbles=5+ 3r(r is the number of red marbles)
red marbles=3r
3r+3r+5=77
6r=77-5
6r=72
r=72/6=12
yellow marbles = 5 + 3r
5+ 12 x 3
5+ 36
=41
 
        
             
        
        
        
Numerical expression:
2 * 8 - 4 or 12
Good luck :)
        
             
        
        
        
Solution :
Demand for cola : 100 – 34x + 5y
Demand for cola : 50 + 3x – 16y
Therefore, total revenue :
x(100 – 34x + 5y) + y(50 + 3x – 16y)
R(x,y)  = 

In order to maximize the revenue, set 



 .............(i)
  .............(i)


 .............(ii)
  .............(ii)
Solving (i) and (ii),
4 x (i)    ⇒       272x - 32y = 400
      (ii)   ⇒   (-<u>)     8x - 32y = -50   </u>
                         264x        = 450
∴   
      
So, x ≈  $ 1.70      and    y = $ 1.99
     R(1.70, 1.99) = $ 134.94
Thus, 1.70 dollars per cola
           1.99 dollars per iced ted to maximize the revenue.
Maximum revenue = $ 134.94