Finding the parabolic steady state of y'+1.85y=0.7t²

[Gspace]

I was given three plots of solutions for a forced exponential diffeq: y'[t]+1.85 y[t]=0.7t^2
with starter values on y[0] equal to -6, 0,and +7

The three plots eventually merge, how do I give the formula for this parabola?

 

[LCKurtz]

This question is answered in the homework section. Multi-posting is against the rules of these forums.