The math club could rent the room for up to 8 hours. I have also attached a picture of the work in case you need it.
Answer:
use the distributive property to distribute the 8
-16+16n+3n=40+5n
-16+19n=40+5n
-16=40+5n-19n
-16=40-14n
-14n+40= -16
-14n= -16-40
-14n= -56
n= -56/-14
n= 4
10000:100*11=1100 income per year
21000-10000=11000 need to have income
11000:1100=10 years will pass time
2 hours and a half, or 2 hours and 30 minutes. :-)
The square root 5 is irrational because a square root of a positive number is either an integer or irrational number. Therefore it is irrational.
