Answer:
(9-3)+18÷8
=6+ 9/4
Step-by-step explanation:
............. 
 
        
                    
             
        
        
        
The increase is D: 50% because the 1 in the parentheses stands for the 20 that was already there, with the .5 being the amount that’s actually being increased. 0.5 translates to 50%, so the answer is D.
        
             
        
        
        
No because the square root of 128 is 11.3 which it not a whole number or in other words doesnt come out evenly
        
             
        
        
        
Answer:

a. We get 56 heads out of 100 tosses. 
We will use one sample proportion test  
x = 56
 n = 100 



Formula of test statistic =
                                        =
                                        =
refer the z table for p value 
p value = 0.8849
a.  We get 560 heads out of 1000 tosses.
We will use one sample proportion test  
x = 560
 n = 1000



Formula of test statistic =
                                        =
                                        =
refer the z table for p value 
p value = .000148
p value of part B is less than Part A because part B have 10 times the number the tosses.
 
        
             
        
        
        
Answer:
6371. six thousand three hundred and seventy-one