Answer:
<em>Pool 1 leaks faster than pool 2.</em>
Step-by-step explanation:
<u>Rates of change</u>
The rate of change (ROC) is a measure that compares two quantities, usually to know how fast one variable changes in time.
We are given two rates of change for two pools that are leaking. The first one loses 2/3 gallon in 15 minutes, and the other loses 3/4 gallon in 20 minutes.
To compare them, we are required to express time in hours. Recall one hour has 60 minutes, or equivalently, one minute has 1/60 hours. Converting both times, we have:
15 minutes = 15/60 = 1/4 hours
20 minutes = 20/60 = 1/3 hours
Now compute both rates of change:
Pool 1:

Pool 2:

Comparing both ratios, it's clear pool 1 leaks faster than pool 2.
Rt-2n=y -- add 2n
Rt=y+2n -- divide by R
t=(y+2n)/R
Answer:

Step-by-step explanation:
Given
The x and y values
Required
Determine the constant of proportionality
This is calculated from:

Pick any corresponding x and y values:
and 
Substitute 8 for x and 2 for y in 

Make r the subject


Pick another x and y values:
and 


<em>Hence, the constant of proportionality is 1/4</em>
The gcf is 11
Hope this helped
The first answer is right (4,037,880). The calculation is 23 Permutation 5.