Answer:
The second option 
Step-by-step explanation:
Please find attached the complete question in the attached image
the proportion of students that like the silver calculator is 0.4 while the proportion of students that like the black calculator is 0.6. More students like the black calculator 
the proportion of students that prefer the black model 77 calculator is 0.3 while the proportion of students that prefer the silver model 55 is 0.25. More students prefer the black model 77 calculator
the proportion of students that prefer the model 66 calculator is 0.15 while the proportion of students that prefer the model 55 calculator is 0.35. More students prefer the model 55
the fewest student prefer the silver model 66 calculator because it has the lowest proportion 
 
        
             
        
        
        
Answer:
7.5 should be the answer sorry if its wrong i don't have all of the information
 
        
             
        
        
        
If you go with Blackburn, you have to pay 25 bucks right off, for the web services hosting setup, that's for them to add your account, and allocate resources on their end for you.
After that, for every passing month, you have to pay 5.69 bucks for the service they provide on daily basis.
if you with Randall, they also charge for setup fee, just cheaper, $6 at once, and then for every month is $9.49.
Blackburn for 
1 month     5.69(1) + 25
2 months   5.69(2) + 25
3 months  5.69(3) + 25
x months  5.69(x) + 25, or 5.69x + 25
Randall for 
1 month  9.49(1) + 6
2 months  9.49(2) + 6
3 months  9.49(3) + 6
x months  9.49(x) + 6, or 9.49x + 6
------------------------------------------------------------------------------------
y = 5.69x + 25
y = 9.49x + 6
        
             
        
        
        
The answer is ten if I'm correct
        
                    
             
        
        
        
I got the answer of 6127.731 hope this works out for you.