In parallelogram lmno, what are the values of x and y
(3x – 55)
(2x)
x = 11, y = 14
x = 11, y = 25
x = 55, y =
x = 55, y = 25
(5y)

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).