Answer:
#3:8n-4
Step-by-step explanation:
combine like terms
3n+n=4n
-7+5=-2
4n-2
multiply that by 2 to get the perimeter, which is 8n-4
Inequality form: m<7
Interval notation: (-infinity sign, 7)
The answer is 6^3
6*6*6= 216
6^3= 216
