Answer:
15 and 16 
Step-by-step explanation:   To get simplified form, you add the numbers in parentheses together. (2+9+4)= 15 and (3+1+4+8)=16 
For problem 1. 2+9=11  11+4=15 
For problem 2. 3+1=4    4+4=8   8+8=16 
Hopefully this helped, and please add me as brainliest. 
 
        
             
        
        
        
Answer:
yes
Step-by-step explanation:
 
        
                    
             
        
        
        
Jennifer 
1. 6
2.26
3.42
4.82
erika
1.7 (erika wrong)
2.15 (right)
3.23 (right)
4.43 (right)
6a. 6 is the right one 
2(6+2)-7=9
        
             
        
        
        
1.04(10^4) + 5.6(10^2)
1.04(10000) + 5.6(100)
10400 + 560
10960