4.9 is answer you are looking for.
42.43 you would just square root it by typing in 1800 then hitting the radical sign. Hope this helped
we are given
differential equation as

we are given

Firstly, we will find y' , y'' and y'''
those are first , second and third derivative
First derivative is

Second derivative is


Third derivative is


now, we can plug these values into differential equation
and we get

now, we can factor out common terms

we can move that term on right side

now, we can factor out


now, we can set them equal





so, we will get
...............Answer
Answer:
19:80 this because I don't know how much milk I can eat at the moment and not to worry too many things will happen to