Question

Isabella filled her pool with water at a constant rate.

The table compares the remaining volume of water left to fill the pool (in liters) and the time since Isabella started filling the pool (in minutes).

How fast did Isabella fill her pool?

Answer 1

(184-94)/5=18

This means that she fills up 18 liters every minute. Thus she will be done in->

184(original amount)+(2 minutes (time passed during first data point)*18(rate of water)=184+36=220

To find the total time taken we divide 220 by 18 which is 220/18=12 2/9

Answer 2

The pool is filling at the rate of 18 liters per minute.

Explanation:

We have been given time in minutes and Volume in liters. We can find the speed at which the volume changes by finding the slope.

Formula for slope will be :

`(v2-v1)/(t2-t1)`

Choosing any 2 values from table. (7,94) and (12,4) denoted as (t1, v1) and (t2, v2)

Calculating the slope we get,

`(4-94)/(12-7)`

=
`(-90)/(5)=-18`

This means the pool is filling at the rate of 18 liters per minute.