At a factory workers are draining a large vat containing water. The water is being drained at a constant rate. The table below shows the amount of water in the vat after different amounts of time.

Question

Time (minutes) 15 20 25 30
Water (liters) 620 560 500 440
Answer the following questions.

(a)How much water was in the vat when the workers started draining it?

(b)Choose the statement that best describes how the time and the amount of water in the vat are related. Then give the value requested.

As time increases, the amount of water in the vat decreases.
At what rate is the amount of water in the vat decreasing?
liters per minute
As time increases, the amount of water in the vat increases.
At what rate is the amount of water in the vat increasing ?
liters per minute

Answer 1

Do you need to write an essay for this?

Just letting you know- I'm, Pro-Truth-Efficient
and I'm going to announce this until the end of the week -_-
I changed my name. -:

Answer 2

If you look carefully, you can see that the vat loses 60L every 5 minutes, or 12 L/min

(a) at t=0, it had 3*60 = 180 L more, or 800L
(b) v = 800-12t
so I think you can now answer the last question.

Answer 3

Alonzo is adding water to a swimming pool at a constant rate. The table below shows the amount of water in the pool after different amounts of time.