Answer:
8. 
9. 
Step-by-step explanation:

^#8^

^#9^
Answer:
4 meters
Step-by-step explanation:
Normally, 100 centimeters should be the normal meter length, but we multiply that by 4 and we get 400 centimeters
For
|a|>15
assume
a>15
a<-15
so
x+6>15
minus 6
x>9
x+6<-15
minu 6
x<-21
B is answer