A perfect square is something times that same thing. Example (x+2)(x+2)
The reason it's called a perfect square is because it can be re-written as a squared function:
Simple...
when they ask for the rate of change they ask for
slope -->>
Using

to find the rate of change for (-3,0) and (-2,-5)



m=-5
Thus, your answer.
The 4 litres of red has to be 2 parts of the mixture, so each part will be 2 litres. Therefore 3 parts of cream will be 6 litres and the one part of blue will be 2 litres.
Basically, what you will do is 540 divided by 6
When you divide that, you should get, 90 parcels.
Hope this helps! Have a good rest of your day! c:
Add all sides.
5x+2+3x+8+4x-1
Combine like terms
12x+9
Subtract nine to get it on the other side of the equal sign
12x= -9
Divide by twelve
x=-9/12
Simplify
x=-3/4
Plug in x.