Work Problem $2\mathrm{.}5$ in the textbook. Estimate the steady state value.

$2\mathrm{.}5$ Solve the following.

a$.x^{}+7x^{}+10x=20,x(0)=5,x^{}(0)=3$

b$.,5x^{}+20x^{}+20x=28,x(0)=5,x^{}(0)=8$

c$.x^{}+16x=144,x(0)=5,x^{}(0)=12$

d$.x^{}+6x^{}+34x=68,x(0)=5,x^{}(0)=7$