Is the volume of water increasing or decreasing here? what is its rate of increase or decrease in liters per hour? 30 points

Rate of decrease is 0.25 l/h

Step-by-step explanation:

First the volume of water is decreasing on this diagram.

On the diagram, the author marked two points.

On the horizontal axis we have points marked 1 and 3 in hours. When we subtract  3 - 1 = 2 hour,  we get interval of time. On the vertical axis we have points 2 and 1.5, when we subtract 2 - 1.5 = 0.5 liters we get decreasing in liters.  Finally when we divide hours and liters we get

For one hour water decrease 0.25 liters.

God with you!!!

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4