Would it be (-3)^7? (-2187)
        
             
        
        
        
21g-6f-8g
13g-6f is the answer
combine like terms
        
             
        
        
        
No.1
r=9
No.3
r=10.5ft
No.5
C=132m
No.7
C=25.12
No.9
44
No.11
264cm
No.13
97.34m
No.15
47.1 
No.17 
Am not sure 
Hope this helps though
        
             
        
        
        
Answer:
2
Step-by-step explanation:
2 is 2.
22 is 2•11.
The GCF is 2.
 
        
             
        
        
        
Answer:
-9
-6
-4
-3
0
Step-by-step explanation:
hope this helps!