Answer:
49
Step-by-step explanation:
If so  the inter quartile range = 58 - 9 = 49
 
        
                    
             
        
        
        
Answer:
a) response variable 
Step-by-step explanation:
The response variable is the variable that depends on other variables such as the independent or explanatory variable, it is the variable that is being tested. The response variable is also called the dependent variable.
In linear regression, the y variable is referred to as the response variable while the x variable is referred to as the explanatory or independent variable.
In this case the y variable is "the number of times they cough in a day" and this variation depends on the x variable "number of cigarettes a person smokes in a day". 
 
        
             
        
        
        
Answer:   75-watt are 30$  fluorescent are 30$ in the second and 65$ in the first
       
Step-by-step explanation: i calculated thirty 75-watt and the fluorescent and got these kinda hard to explain hope i helped:) 
 
        
             
        
        
        
Answer:
48
Step-by-step explanation:
66*2=132
180-132=48
Hope this helps!
If not, I am sorry.