Answer:
To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate. 
Step-by-step explanation:
 As an example, in this case, divide the numerator and denominator of 70/5 by 5, to get 14/1, or 14 students per class, which is the unit rate.
 
        
                    
             
        
        
        
Answer:
divide the previous value by 5
Step-by-step explanation:
5^2=25, 5^1=5, 25/5=5
 
        
             
        
        
        
The double bar graph shows the number of imports and exports for a company in a certain week.
On how many days was the number of exports greater than the number of imports?
Answer: From the given double bar graph, we clearly see:
Number of imports for a company on Monday = 15
Number of exports for a company on Monday = 7
Number of imports for a company on Tuesday = 18
Number of exports for a company on Tuesday = 9
Number of imports for a company on Wednesday = 14
Number of exports for a company on Wednesday = 14
Number of imports for a company on Thursday = 15
Number of exports for a company on Thursday = 6
Number of imports for a company on Friday = 9
Number of exports for a company on Friday = 19
From the above information, we clearly see that only on Friday the number of exports are greater than number of imports. Therefore, there is only 1 day when the number of exports greater than the number of imports.
Hence the option D. 1 is correct
 
        
             
        
        
        
Surface area SA: 

Circumference C: 

 dividing this you get 

 and 

Now let's input the radius 

 into the Surface area formula...
 
 
        
        
        
Answer:
C.  Reflect triangle J across the y-axis, then across the x-axis.