Write the linear system:

C) Solve the system using substitution and then elimination. Show all work and

steps:

D) List the three parameter values: ab c == = _ _ _

E) Write the quadratic equation: _

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).