Answer:

Step-by-step explanation:








 
        
             
        
        
        
Answer:
yes yes  no
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
Explanation:
Because 
(2,6) is in the function, we can plug 
6 as y
 and 
2 as x.
From that we get 
6=a(2−1)2+k
 
6=a+k
 
Same for the next point: 
12=a(3−1)2+k
 
12=22a+k
 
12=4a+k
 
Now we have this system of equations to solve:
a+k=6
 4a+k=12
 
Solving it leads to the conclusion that 
a=2,k=4 .
 
        
             
        
        
        
0.31777777777. I am pretty sure. I used my calculator
        
             
        
        
        
Answer:
4.04
Step-by-step explanation:
2.84 + 1.2 = 4.04