Answer:
KI=11.25 and HI=6.75
Step-by-step explanation:
Consider the below figure attached with this question.
According to Pythagoras Theorem:

Use Pythagoras in triangle HKL




Taking square root on both sides.

Let length of HI be x.
LI = 12+x
Use Pythagoras theorem in ΔKLI,




Use Pythagoras theorem in ΔHKI,


From (1) and (2) we get



Hence, the measure of HI is 6.75 units.
Substitute x=6.75 in equation (2).


Taking square root on both sides.


Hence, the measure of KI is 11.25 units.
 
        
             
        
        
        
A,C,B 
A’s unit rate is 11.0667
C’s unit rate is 12.009
B’s unit rate is 12.5
        
                    
             
        
        
        
Answer:
Quality Plumbing charges more per hour. 
In the graph, you can see that it would cost $150 for their work plus $100 per hour based on the slope of the line. 
A Plus Plumbing charges $140 for their work plus $60 per hour.
 
        
             
        
        
        
A = the number before x^2 = 3
b = the number before x = 5
To find the axis of symmetry: -b/2a
x = -5/6
        
             
        
        
        
-4 is greater than - 10 because -4 is closer to 0 than -10 is