Question

A pool is filling up at a rate 7 gallons per minute. which equation best represents y, the total amount in the pool after x minutes?
A. x=7y
B. y=7x
C. y=7+x
D. x=7+y

Answer 1

B. y = 7x

7x is the steady rate of 7 gallons per minute. The number of minutes can also be plugged into x to find the volume of the pool after x minutes.

Answer 2

B. y=7x

y represents the amount of water in the pool after x minutes, that means it's going to be the result.

x represents minutes.

you are multiplying it because it's per minutes