X = # of perfomances
y = total amount of money
Income: y = 7500x
Expense: y = 5900x + 88000
Substitution:
7500x = 5900x + 88000
1600x = 88000
x = 55
y = 7500(55) = $412,500
55 performances are needed to break-even.
        
             
        
        
        
Answer:
(1,6)
x = 1, y = 6
See attachment for the graph
Step-by-step explanation:
y=x+5  
y=-x+7
Using the elimination process
      y=x+5  
-     y=-x+7
----------------
      0=2x-2
      2=2x
       1=x
       x=1
Substitute x = 1
y = x + 5
y = 1 + 5
y = 6
 
        
                    
             
        
        
        
Each book costs $34 for this problem you need to first subtract 18 from 324 which gets you 306 then divide 306 by 9 and you get 34
        
                    
             
        
        
        
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