Y = 20x + 7 for instance
then just substitute the values
        
             
        
        
        
Answer:
1120 
Step-by-step explanation: All you have to do is multiply 4x4x5x14 equals 1120 
 
        
             
        
        
        
Answer:
it ix 23 then 43
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:  1.509
Step-by-step explanation:
The formula of Margin of Error for (n<30):-

Given : Sample size : n= 22
Level of confidence = 0.99
Significance level : 
Using the t-distribution table , 
Critical value : 
Standard deviation: 
Then, we have

Hence, the margin of error for a 99% confidence interval for the population mean =1.509