2 meters were used in 10 masks
2meters/10masks= 0.2meters per mask
3^4 means 3 to the 4th power.
This means that you would multiply 3 by itself 4 times
It would look like this...3*3*3*3
3^4=81
176 is the answer hope i helped!
3/5x-5
I believe this is the expression that is described.
