Answer:
The opposite of -8 is 0 and the absolute value in 8
Step-by-step explanation:
ANSWER
Approximately after 15 minutes.
EXPLANATION
The growth rate of the first bacteria is

The growth rate of the first bacteria :

To find the time that, there will be an equal number of bacteria, we equate the two equation;



We solve for t to get,

Or

We discard the negative value.
This implies that,

X-the $5 bills
y-the $10 bills
x+y=20
5x+10y=120
It's a system.
For my estimate I think you need 5 rulers for the door. 7 rulers for the flag. and for the small room wall i:ll say 9 12-inch rulers. :)0