Heyyyyyyyyyyy Hii what’s up
        
             
        
        
        
Answer:
Answer: Janet is 16, and David is 11.
Step-by-step explanation:
Let the ages be j and d.
j = d + 5
j + d = 27
Substitute d + 5 for j in the second equation.
d + 5 + d = 27
2d + 5 = 27
2d = 22
d = 11
Substitute 11 for d in the first equation.
j = d + 5
j = 11 + 5
j = 16
Answer: Janet is 16, and David is 11.
 
        
             
        
        
        
1 would be D. 
2. Is A since 3^2=9 and -3^2=9 And 9-9=0. Im pretty sure A. For number 3. Just because the two x-values are 3 and -3. I’m sorry if I’m wrong on #3.
        
             
        
        
        
Answer:
I am not certain if its right 
Step-by-step explanation:
 
        
             
        
        
        
The answer for this question is 65.099 or when round off to two decimal places, it will be 65.10