Answer:
Mininum value of K is 220
Step-by-step explanation:
400 people has a "yes" answer for the first question and 220 people has a "yes" answer for the second question
There is a possibility that 220 out of the 400 people that has a "yes" answer for the first question also has a "yes" for the second question
Therefore, the minimum number of people that has two "yes" answer (K) is 220
 
        
             
        
        
        
Step-by-step explanation:
work is shown and pictured
 
        
             
        
        
        
The ilne paralell to x=something is x=something else (both are constants)
slope=rise/run
x=-3
it rises infiniley and runs 0 (goes left to right 0)
slope=infinity/0=undefined
the slope is undefined
paralell lines have same slope
so the slope of a paralell line is also undefined
        
                    
             
        
        
        
Answer:
x=3
Step-by-step explanation:
3x+5=14
    -5  -5
3x=9
/3  /3
x=3
 
        
                    
             
        
        
        
7 1/4 + 5 3/5 
First, you need a common denominator to add the two. 20 will work. 
4x5=20, so we have to also multiply 1 by 5.
4x5=20, 1x5=5
5x4=20, so we have to also multiply 3 by 4.
5x4=20, 3x4=12
And now we put the fractions back in.
7 5/20 + 5 12/20
And add them.
7 5/20 + 5 12/20 = 12 17/20
Now, we're supposed to reduce it to its lowest form.
Unfortunately, the fraction cannot be reduced, because 17 is a prime number, meaning there are no factors to it except one and itself. 
Therefore, the lowest form of 12 17/20 is 12 17/20
Your answer is B, 12 17/20