Paul is filling a kiddy pool that can hold up to 25 gallons of water. The water hose fills the tub at a constant rate. When Paul checks the pool, it contains 5 gallons of water. Three minutes later, the pool contains 7.4 gallons of water. At what rate does the pool fill up with water?

0.8 gallons per second

Step-by-step explanation:

Given that :

Filling occurs at a constant rate ;

Change in gallon of water in pool within a 3 seconds time interval ;

Assume :

At t = 0 ; gallons = 5

At t = 3 ; gallons = 7.4

Chanhe in gallons with time.;

(7.4 - 5) / (3 - 0)

2.4 / 3

= 0.8 gallons per second

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11