You want to buy a CD player that costs $100. You get paid $6 per hour at work. Which equation could you use to find out how many hours you
must work in order to buy the CD player and still have $80 leftover?

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).