Answer:
4 1/2 tons of recycled paper
Step-by-step explanation:
13.5/3 = 4.5 or 4 1/2
 
        
             
        
        
        
Answer:
 
    
 
    
And the 96% confidence is given by (110.06; 117.34)
Step-by-step explanation:
Information given
 represent the sample mean
 represent the sample mean 
 population mean (variable of interest)
 population mean (variable of interest)
s=9.1 represent the sample standard deviation
n=29 represent the sample size  
Confidence interval
The confidence interval for the mean is given by the following formula:
 (1)
   (1)
The degrees of freedom are given by:
 
The Confidence is 0.96 or 96%, the significance is  and
 and  , and the critical value would be
, and the critical value would be  
Replacing the info we got:
 
    
 
    
And the 96% confidence is given by (110.06; 117.34)
 
        
             
        
        
        
A) x + y = 17
B) x - y = 27
Adding both equations:2x = 44
x = 22
y = -5
        
             
        
        
        
Answer:
(-3, -5) This is my answer I hope it helps