Question

The height of the water of an above ground pool is 3 feet. It needs to be drained completely. The height of the water changes at a rate of -1/2 per minute. How many minutes will it take to drain the pool? (Use 'm' to represent minutes and ALSO WRITE EQUATION TO REPRESENT IT please thx!!!! <3)

Answer 1

3 feet= -1/2m
That is the equation
First divide -1/2 on both sides of the equation
3 feet= -1/2m
_____   ____
-1/2       -1/2

They cross out and leaves m 
Divide 3 feet by -1/2
m=-6