For #1
city A's mean would be 10.5, then you would divide it by the number of numbers there is which is 5,So 10.5/5 is 2.1
city B's mean would be 11.6  then you would divide it by the number of numbers there is which is 5, So 11.6/5 is 2.32.
thats all I have don't know how to do #3 sorry 
        
             
        
        
        
Answer:
-1  2/3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 3
Step-by-step explanation:
6x - 4 = 2x + 8
6x - 2x = 8 + 4
4x = 12
x = 12/4
x = 3
 
        
                    
             
        
        
        
Answer:
Reindeer runs in 3 hrs = 20×1/4 miles
Reindeer runs in 1 hr = 81/4 × 1/3 = 6 × 3/4 miles (option 2)
 
        
             
        
        
        
Given equation is 

The given equation is in the form of 

a^2= 16  , so a=4
b^2 = 9 so b= 4
The value of 'a' is greater than the value of 'b'
So it is a Horizontal hyperbola
First two graphs are horizontal hyperbola
Here center is (h,k)  
h= 5 and k =2 from the given equation
So center is (5,2)
Now we find vertices
Vertices are (h+a,k)  and (h-a,k)
We know h=5, k=2  and a=4
So vertices are (9,2)  and (1,2)
Second graph having same vertices and center
The correct graph is attached below