(I know the ones I put are wrong) please help!!! (All the questions I’m posting are from a quiz I failed and I’m trying to retake it to help my grade

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).

What is 74 round to the nearest ten

What is the measure of angle a and angle c ?