Lauren reads 30 pages in 6 minutes in a 240-page novel. What is the constant of proportionality that relates the number of pages, y, to the number of minutes, x?

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).