Question

A tub filled with 50 quarts of water empties at a rate of 2.5 quarts per minute. Let w = quarts of water left in the tub and t = time in minutes.

Answer 1

Which equation models the relationship? Awnser: w=50-2.5t

Is there a viable solution when time is 30 minutes? Answer: No, the tub will be empty by then.

Answer 2

A tub filled with 50 quarts of water empties at a rate of 2.5 quarts per minute.

Let w be the quarts of water left in the tub.

Let t be the time in minutes.

So, the equation to model this situation is :

Modelling equation:
`w=50-2.5t`

This equation is viable only up to when t is 20 minutes. That will give w = 0. More than 20 minutes is not possible.