Pls help this is due in 10 min

What is the measure of the smallest angle in the diagram? 15 29 32 45

Graph the linear function using the slooe and y intercept

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).